diff --git a/gapic-generator-java/src/main/java/com/google/api/generator/engine/ast/ClassDefinition.java b/gapic-generator-java/src/main/java/com/google/api/generator/engine/ast/ClassDefinition.java
index 0456ace194..1e09e39f40 100644
--- a/gapic-generator-java/src/main/java/com/google/api/generator/engine/ast/ClassDefinition.java
+++ b/gapic-generator-java/src/main/java/com/google/api/generator/engine/ast/ClassDefinition.java
@@ -203,9 +203,6 @@ public ClassDefinition build() {
                 expr instanceof AssignmentExpr,
                 "Class expression statement must be assignment or variable declaration");
             VariableExpr variableExpr = ((AssignmentExpr) expr).variableExpr();
-            Preconditions.checkState(
-                !variableExpr.scope().equals(ScopeNode.LOCAL),
-                "Class variable in assignment statement cannot have a local scope");
           }
         }
       }
diff --git a/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/Composer.java b/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/Composer.java
index da83ba8933..606176852b 100644
--- a/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/Composer.java
+++ b/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/Composer.java
@@ -69,6 +69,7 @@ public static List<GapicClass> generateServiceClasses(GapicContext context) {
     clazzes.addAll(generateClientSettingsClasses(context));
     clazzes.addAll(generateMockClasses(context, context.services()));
     clazzes.addAll(generateTestClasses(context));
+    clazzes.addAll(generateVersionClasses(context));
     return clazzes;
   }
 
@@ -197,6 +198,15 @@ public static List<GapicClass> generateTestClasses(GapicContext context) {
     return clazzes;
   }
 
+  public static List<GapicClass> generateVersionClasses(GapicContext context) {
+    return context.services().stream()
+        .collect(Collectors.toMap(Service::pakkage, s -> s, (s1, s2) -> s1))
+        .values()
+        .stream()
+        .map(service -> LibraryVersionClassComposer.instance().generate(context, service))
+        .collect(Collectors.toList());
+  }
+
   @VisibleForTesting
   static List<GapicClass> prepareExecutableSamples(List<GapicClass> clazzes) {
     // Include license header, apiShortName, and apiVersion
diff --git a/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/LibraryVersionClassComposer.java b/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/LibraryVersionClassComposer.java
new file mode 100644
index 0000000000..a450526ac6
--- /dev/null
+++ b/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/LibraryVersionClassComposer.java
@@ -0,0 +1,95 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.api.generator.gapic.composer;
+
+import com.google.api.generator.engine.ast.AnnotationNode;
+import com.google.api.generator.engine.ast.AssignmentExpr;
+import com.google.api.generator.engine.ast.ClassDefinition;
+import com.google.api.generator.engine.ast.CommentStatement;
+import com.google.api.generator.engine.ast.ConcreteReference;
+import com.google.api.generator.engine.ast.ExprStatement;
+import com.google.api.generator.engine.ast.LineComment;
+import com.google.api.generator.engine.ast.ScopeNode;
+import com.google.api.generator.engine.ast.StringObjectValue;
+import com.google.api.generator.engine.ast.TypeNode;
+import com.google.api.generator.engine.ast.ValueExpr;
+import com.google.api.generator.engine.ast.Variable;
+import com.google.api.generator.engine.ast.VariableExpr;
+import com.google.api.generator.gapic.model.GapicClass;
+import com.google.api.generator.gapic.model.GapicContext;
+import com.google.api.generator.gapic.model.Service;
+import java.util.Arrays;
+
+public class LibraryVersionClassComposer {
+  private static final LibraryVersionClassComposer INSTANCE = new LibraryVersionClassComposer();
+
+  private LibraryVersionClassComposer() {}
+
+  public static LibraryVersionClassComposer instance() {
+    return INSTANCE;
+  }
+
+  public GapicClass generate(GapicContext context, Service service) {
+    String packageName = service.pakkage() + ".stub";
+    String className = "Version";
+
+    String artifact = context.artifact();
+    String artifactId = artifact;
+    if (artifact != null && artifact.contains(":")) {
+      artifactId = artifact.split(":")[1];
+    }
+
+    VariableExpr versionVarExpr =
+        VariableExpr.withVariable(
+            Variable.builder().setType(TypeNode.STRING).setName("VERSION").build());
+    AssignmentExpr versionAssignmentExpr =
+        AssignmentExpr.builder()
+            .setVariableExpr(
+                versionVarExpr.toBuilder()
+                    .setIsDecl(true)
+                    .setScope(ScopeNode.LOCAL)
+                    .setIsStatic(true)
+                    .setIsFinal(true)
+                    .build())
+            .setValueExpr(ValueExpr.withValue(StringObjectValue.withValue("0.0.0-SNAPSHOT")))
+            .build();
+
+    ClassDefinition classDef =
+        ClassDefinition.builder()
+            .setPackageString(packageName)
+            .setAnnotations(
+                Arrays.asList(
+                    AnnotationNode.builder()
+                        .setType(
+                            TypeNode.withReference(
+                                ConcreteReference.withClazz(com.google.api.core.InternalApi.class)))
+                        .setDescription("For internal use only")
+                        .build()))
+            .setScope(ScopeNode.LOCAL)
+            .setIsFinal(true)
+            .setName(className)
+            .setStatements(
+                Arrays.asList(
+                    CommentStatement.withComment(
+                        LineComment.withComment(
+                            String.format("{x-version-update-start:%s:current}", artifactId))),
+                    ExprStatement.withExpr(versionAssignmentExpr),
+                    CommentStatement.withComment(
+                        LineComment.withComment("{x-version-update-end}"))))
+            .build();
+
+    return GapicClass.create(GapicClass.Kind.MAIN, classDef);
+  }
+}
diff --git a/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/common/AbstractServiceStubSettingsClassComposer.java b/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/common/AbstractServiceStubSettingsClassComposer.java
index ef87b96d3f..698fd50a29 100644
--- a/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/common/AbstractServiceStubSettingsClassComposer.java
+++ b/gapic-generator-java/src/main/java/com/google/api/generator/gapic/composer/common/AbstractServiceStubSettingsClassComposer.java
@@ -1063,7 +1063,7 @@ private List<MethodDefinition> createClassMethods(
             SettingsCommentComposer.NEW_BUILDER_METHOD_COMMENT));
     javaMethods.addAll(createBuilderHelperMethods(service, typeStore));
     javaMethods.add(createClassConstructor(service, methodSettingsMemberVarExprs, typeStore));
-    javaMethods.add(createGetLibraryMetadataMethod(context));
+    javaMethods.add(createGetLibraryMetadataMethod(context, service));
     return javaMethods;
   }
 
@@ -2107,7 +2107,7 @@ private static MethodDefinition createNestedClassBuildMethod(
         .build();
   }
 
-  private MethodDefinition createGetLibraryMetadataMethod(GapicContext context) {
+  private MethodDefinition createGetLibraryMetadataMethod(GapicContext context, Service service) {
     TypeNode returnType = FIXED_TYPESTORE.get("LibraryMetadata");
     MethodInvocationExpr libraryMetadataBuilderExpr =
         MethodInvocationExpr.builder()
@@ -2133,6 +2133,23 @@ private MethodDefinition createGetLibraryMetadataMethod(GapicContext context) {
               .build();
     }
 
+    libraryMetadataBuilderExpr =
+        MethodInvocationExpr.builder()
+            .setExprReferenceExpr(libraryMetadataBuilderExpr)
+            .setMethodName("setVersion")
+            .setArguments(
+                VariableExpr.builder()
+                    .setStaticReferenceType(
+                        TypeNode.withReference(
+                            VaporReference.builder()
+                                .setName("Version")
+                                .setPakkage(String.format("%s.stub", service.pakkage()))
+                                .build()))
+                    .setVariable(
+                        Variable.builder().setName("VERSION").setType(TypeNode.STRING).build())
+                    .build())
+            .build();
+
     Expr returnExpr =
         MethodInvocationExpr.builder()
             .setExprReferenceExpr(libraryMetadataBuilderExpr)
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/engine/ast/ClassDefinitionTest.java b/gapic-generator-java/src/test/java/com/google/api/generator/engine/ast/ClassDefinitionTest.java
index 9511029d9a..964eefa3c8 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/engine/ast/ClassDefinitionTest.java
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/engine/ast/ClassDefinitionTest.java
@@ -293,31 +293,6 @@ void invalidClassDefinition_extendsImplementsSameType() {
         });
   }
 
-  @Test
-  void invalidClassDefinition_assignmentWithUnscopedVariableExprStatement() {
-    Variable variable = createVariable("x", TypeNode.INT);
-    VariableExpr variableExpr =
-        VariableExpr.builder().setVariable(variable).setIsDecl(true).build();
-
-    Variable anotherVariable = createVariable("y", TypeNode.INT);
-    Expr valueExpr = VariableExpr.builder().setVariable(anotherVariable).build();
-
-    AssignmentExpr assignmentExpr =
-        AssignmentExpr.builder().setVariableExpr(variableExpr).setValueExpr(valueExpr).build();
-
-    List<Statement> statements = Arrays.asList(ExprStatement.withExpr(assignmentExpr));
-    assertThrows(
-        IllegalStateException.class,
-        () -> {
-          ClassDefinition.builder()
-              .setPackageString("com.google.example.library.v1.stub")
-              .setName("LibraryServiceStub")
-              .setScope(ScopeNode.PUBLIC)
-              .setStatements(statements)
-              .build();
-        });
-  }
-
   @Test
   void invalidClassDefinition_unscopedVariableExprStatement() {
     List<Statement> statements =
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/LibraryVersionClassComposerTest.java b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/LibraryVersionClassComposerTest.java
new file mode 100644
index 0000000000..75c82b44eb
--- /dev/null
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/LibraryVersionClassComposerTest.java
@@ -0,0 +1,34 @@
+// Copyright 2026 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.api.generator.gapic.composer;
+
+import com.google.api.generator.gapic.model.GapicClass;
+import com.google.api.generator.gapic.model.GapicContext;
+import com.google.api.generator.gapic.model.Service;
+import com.google.api.generator.test.framework.Assert;
+import com.google.api.generator.test.protoloader.GrpcTestProtoLoader;
+import org.junit.Test;
+
+public class LibraryVersionClassComposerTest {
+
+  @Test
+  public void generateVersionClasses() {
+    GapicContext context = GrpcTestProtoLoader.instance().parseShowcaseEcho();
+    Service service = context.services().get(0);
+    GapicClass clazz = LibraryVersionClassComposer.instance().generate(context, service);
+
+    Assert.assertGoldenClass(this.getClass(), clazz, "EchoVersion.golden");
+  }
+}
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoVersion.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoVersion.golden
new file mode 100644
index 0000000000..b8b3199cba
--- /dev/null
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/goldens/EchoVersion.golden
@@ -0,0 +1,11 @@
+package com.google.showcase.v1beta1.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:gapic-showcase:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/ApiVersionTestingStubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/ApiVersionTestingStubSettings.golden
index 86eb85a244..e6a8c4d47b 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/ApiVersionTestingStubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/ApiVersionTestingStubSettings.golden
@@ -170,7 +170,7 @@ public class EchoWithVersionStubSettings extends StubSettings<EchoWithVersionStu
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for EchoWithVersionStubSettings. */
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/DeprecatedServiceStubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/DeprecatedServiceStubSettings.golden
index b33cacc753..70c3341c85 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/DeprecatedServiceStubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/DeprecatedServiceStubSettings.golden
@@ -187,7 +187,7 @@ public class DeprecatedServiceStubSettings extends StubSettings<DeprecatedServic
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for DeprecatedServiceStubSettings. */
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/EchoServiceSelectiveGapicStubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/EchoServiceSelectiveGapicStubSettings.golden
index 8e4331441c..e2b808edc1 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/EchoServiceSelectiveGapicStubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/EchoServiceSelectiveGapicStubSettings.golden
@@ -224,7 +224,7 @@ public class EchoServiceShouldGeneratePartialUsualStubSettings
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for EchoServiceShouldGeneratePartialUsualStubSettings. */
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/EchoStubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/EchoStubSettings.golden
index b44a4dc491..530dc8a269 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/EchoStubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/EchoStubSettings.golden
@@ -413,6 +413,7 @@ public class EchoStubSettings extends StubSettings<EchoStubSettings> {
     return LibraryMetadata.newBuilder()
         .setArtifactName("com.google.cloud:gapic-showcase")
         .setRepository("googleapis/sdk-platform-java")
+        .setVersion(Version.VERSION)
         .build();
   }
 
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/JobServiceStubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/JobServiceStubSettings.golden
index 89ddd1d703..f064845177 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/JobServiceStubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/JobServiceStubSettings.golden
@@ -260,7 +260,7 @@ public class JobServiceStubSettings extends StubSettings<JobServiceStubSettings>
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for JobServiceStubSettings. */
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/LoggingServiceV2StubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/LoggingServiceV2StubSettings.golden
index e807465385..d90cf2f7c1 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/LoggingServiceV2StubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/LoggingServiceV2StubSettings.golden
@@ -512,7 +512,10 @@ public class LoggingServiceV2StubSettings extends StubSettings<LoggingServiceV2S
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder()
+        .setArtifactName("com.google.cloud:google-cloud-logging")
+        .setVersion(Version.VERSION)
+        .build();
   }
 
   /** Builder for LoggingServiceV2StubSettings. */
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/PublisherStubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/PublisherStubSettings.golden
index 1c48ebf05a..c6f8227278 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/PublisherStubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpc/goldens/PublisherStubSettings.golden
@@ -522,7 +522,7 @@ public class PublisherStubSettings extends StubSettings<PublisherStubSettings> {
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for PublisherStubSettings. */
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpcrest/goldens/EchoStubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpcrest/goldens/EchoStubSettings.golden
index c72a710298..86d7494823 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpcrest/goldens/EchoStubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpcrest/goldens/EchoStubSettings.golden
@@ -445,6 +445,7 @@ public class EchoStubSettings extends StubSettings<EchoStubSettings> {
     return LibraryMetadata.newBuilder()
         .setArtifactName("com.google.cloud:gapic-showcase")
         .setRepository("googleapis/sdk-platform-java")
+        .setVersion(Version.VERSION)
         .build();
   }
 
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpcrest/goldens/WickedStubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpcrest/goldens/WickedStubSettings.golden
index 279e5e50f4..49780b5885 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpcrest/goldens/WickedStubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/grpcrest/goldens/WickedStubSettings.golden
@@ -192,6 +192,7 @@ public class WickedStubSettings extends StubSettings<WickedStubSettings> {
     return LibraryMetadata.newBuilder()
         .setArtifactName("com.google.cloud:gapic-showcase")
         .setRepository("googleapis/sdk-platform-java")
+        .setVersion(Version.VERSION)
         .build();
   }
 
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/rest/goldens/ComplianceStubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/rest/goldens/ComplianceStubSettings.golden
index 1aa32cf67f..1633188ee0 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/rest/goldens/ComplianceStubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/rest/goldens/ComplianceStubSettings.golden
@@ -225,7 +225,7 @@ public class ComplianceStubSettings extends StubSettings<ComplianceStubSettings>
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for ComplianceStubSettings. */
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/rest/goldens/HttpJsonApiVersionTestingStubSettings.golden b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/rest/goldens/HttpJsonApiVersionTestingStubSettings.golden
index 8f5bfa77fd..924e9c5566 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/rest/goldens/HttpJsonApiVersionTestingStubSettings.golden
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/gapic/composer/rest/goldens/HttpJsonApiVersionTestingStubSettings.golden
@@ -172,7 +172,7 @@ public class EchoWithVersionStubSettings extends StubSettings<EchoWithVersionStu
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for EchoWithVersionStubSettings. */
diff --git a/gapic-generator-java/src/test/java/com/google/api/generator/test/protoloader/TestProtoLoader.java b/gapic-generator-java/src/test/java/com/google/api/generator/test/protoloader/TestProtoLoader.java
index 2684fcf092..e690db5563 100644
--- a/gapic-generator-java/src/test/java/com/google/api/generator/test/protoloader/TestProtoLoader.java
+++ b/gapic-generator-java/src/test/java/com/google/api/generator/test/protoloader/TestProtoLoader.java
@@ -74,6 +74,7 @@ public class TestProtoLoader {
           + " to have the values echoed in the response trailers.";
   private static final String ECHO_SERVICE_REPOSITORY = "googleapis/sdk-platform-java";
   private static final String ECHO_SERVICE_ARTIFACT = "com.google.cloud:gapic-showcase";
+  private static final String LOGGING_SERVICE_ARTIFACT = "com.google.cloud:google-cloud-logging";
   private final String testFilesDirectory;
   private final Transport transport;
 
@@ -505,6 +506,7 @@ public GapicContext parseLogging() {
         .setServiceConfig(config)
         .setHelperResourceNames(outputResourceNames)
         .setTransport(transport)
+        .setArtifact(LOGGING_SERVICE_ARTIFACT)
         .build();
   }
 
diff --git a/gax-java/gax/src/main/java/com/google/api/gax/rpc/LibraryMetadata.java b/gax-java/gax/src/main/java/com/google/api/gax/rpc/LibraryMetadata.java
index 530c29fa0d..eb8c48f5fe 100644
--- a/gax-java/gax/src/main/java/com/google/api/gax/rpc/LibraryMetadata.java
+++ b/gax-java/gax/src/main/java/com/google/api/gax/rpc/LibraryMetadata.java
@@ -65,6 +65,13 @@ public abstract class LibraryMetadata {
   @Nullable
   public abstract String artifactName();
 
+  /**
+   * Returns the version of the client library.
+   *
+   * <p>Example: {@code "2.74.1"}. This maps to the {@code gcp.client.version} attribute.
+   *
+   * @return the version, or {@code null} if not set
+   */
   @Nullable
   public abstract String version();
 
@@ -73,7 +80,7 @@ public static LibraryMetadata empty() {
   }
 
   public boolean isEmpty() {
-    return repository() == null && artifactName() == null;
+    return repository() == null && artifactName() == null && version() == null;
   }
 
   public static LibraryMetadata.Builder newBuilder() {
@@ -86,7 +93,7 @@ public abstract static class Builder {
 
     public abstract Builder setArtifactName(@Nullable String artifactName);
 
-    public abstract Builder setVersion(@Nullable String version);
+    public abstract Builder setVersion(@Nullable String libraryVersion);
 
     public abstract LibraryMetadata build();
   }
diff --git a/gax-java/gax/src/main/java/com/google/api/gax/tracing/ApiTracerContext.java b/gax-java/gax/src/main/java/com/google/api/gax/tracing/ApiTracerContext.java
index 60d560e319..4b239c05ac 100644
--- a/gax-java/gax/src/main/java/com/google/api/gax/tracing/ApiTracerContext.java
+++ b/gax-java/gax/src/main/java/com/google/api/gax/tracing/ApiTracerContext.java
@@ -186,6 +186,9 @@ public Map<String, Object> getAttemptAttributes() {
         attributes.put(
             ObservabilityAttributes.ARTIFACT_ATTRIBUTE, libraryMetadata().artifactName());
       }
+      if (!Strings.isNullOrEmpty(libraryMetadata().version())) {
+        attributes.put(ObservabilityAttributes.VERSION_ATTRIBUTE, libraryMetadata().version());
+      }
     }
     if (transport() == Transport.GRPC && !Strings.isNullOrEmpty(fullMethodName())) {
       attributes.put(ObservabilityAttributes.GRPC_RPC_METHOD_ATTRIBUTE, fullMethodName());
diff --git a/gax-java/gax/src/main/java/com/google/api/gax/tracing/ObservabilityAttributes.java b/gax-java/gax/src/main/java/com/google/api/gax/tracing/ObservabilityAttributes.java
index 6355dc0b9d..5ea52462ca 100644
--- a/gax-java/gax/src/main/java/com/google/api/gax/tracing/ObservabilityAttributes.java
+++ b/gax-java/gax/src/main/java/com/google/api/gax/tracing/ObservabilityAttributes.java
@@ -53,6 +53,9 @@ public class ObservabilityAttributes {
   /** The artifact name of the client library (e.g., "google-cloud-vision"). */
   public static final String ARTIFACT_ATTRIBUTE = "gcp.client.artifact";
 
+  /** The version of the client library (e.g., "1.2.3"). */
+  public static final String VERSION_ATTRIBUTE = "gcp.client.version";
+
   /** The full RPC method name, including package, service, and method. */
   public static final String GRPC_RPC_METHOD_ATTRIBUTE = "rpc.method";
 
diff --git a/gax-java/gax/src/test/java/com/google/api/gax/tracing/ApiTracerContextTest.java b/gax-java/gax/src/test/java/com/google/api/gax/tracing/ApiTracerContextTest.java
index a78063753f..10aff5e6dd 100644
--- a/gax-java/gax/src/test/java/com/google/api/gax/tracing/ApiTracerContextTest.java
+++ b/gax-java/gax/src/test/java/com/google/api/gax/tracing/ApiTracerContextTest.java
@@ -74,6 +74,16 @@ void testGetAttemptAttributes_artifact() {
         .containsEntry(ObservabilityAttributes.ARTIFACT_ATTRIBUTE, "test-artifact");
   }
 
+  @Test
+  void testGetAttemptAttributes_version() {
+    LibraryMetadata libraryMetadata = LibraryMetadata.newBuilder().setVersion("1.2.3").build();
+    ApiTracerContext context =
+        ApiTracerContext.newBuilder().setLibraryMetadata(libraryMetadata).build();
+    Map<String, Object> attributes = context.getAttemptAttributes();
+
+    assertThat(attributes).containsEntry(ObservabilityAttributes.VERSION_ATTRIBUTE, "1.2.3");
+  }
+
   @Test
   void testGetAttemptAttributes_httpMethod() {
     ApiTracerContext context =
@@ -165,7 +175,7 @@ void testGetAttemptAttributes_empty() {
   @Test
   void testGetAttemptAttributes_emptyStrings() {
     LibraryMetadata libraryMetadata =
-        LibraryMetadata.newBuilder().setRepository("").setArtifactName("").build();
+        LibraryMetadata.newBuilder().setRepository("").setArtifactName("").setVersion("").build();
     ApiTracerContext context =
         ApiTracerContext.newBuilder()
             .setLibraryMetadata(libraryMetadata)
diff --git a/hermetic_build/library_generation/templates/owlbot.yaml.monorepo.j2 b/hermetic_build/library_generation/templates/owlbot.yaml.monorepo.j2
index 9ed63c4260..37096be0ee 100644
--- a/hermetic_build/library_generation/templates/owlbot.yaml.monorepo.j2
+++ b/hermetic_build/library_generation/templates/owlbot.yaml.monorepo.j2
@@ -21,6 +21,7 @@ deep-remove-regex:
 
 deep-preserve-regex:
 - "/{{ module_name }}/google-.*/src/test/java/com/google/cloud/.*/v.*/it/IT.*Test.java"
+- "/{{ module_name }}/google-.*/src/main/java/com/google/cloud/.*/v.*/stub/Version.java"
 
 deep-copy-regex:
 - source: "/{{ proto_path }}/(v.*)/.*-java/proto-google-.*/src"
diff --git a/hermetic_build/library_generation/tests/resources/goldens/.OwlBot-hermetic-golden.yaml b/hermetic_build/library_generation/tests/resources/goldens/.OwlBot-hermetic-golden.yaml
index 225b4620bf..5aa364f72c 100644
--- a/hermetic_build/library_generation/tests/resources/goldens/.OwlBot-hermetic-golden.yaml
+++ b/hermetic_build/library_generation/tests/resources/goldens/.OwlBot-hermetic-golden.yaml
@@ -21,6 +21,7 @@ deep-remove-regex:
 
 deep-preserve-regex:
 - "/java-bare-metal-solution/google-.*/src/test/java/com/google/cloud/.*/v.*/it/IT.*Test.java"
+- "/java-bare-metal-solution/google-.*/src/main/java/com/google/cloud/.*/v.*/stub/Version.java"
 
 deep-copy-regex:
 - source: "/google/cloud/baremetalsolution/(v.*)/.*-java/proto-google-.*/src"
diff --git a/java-showcase/.OwlBot-hermetic.yaml b/java-showcase/.OwlBot-hermetic.yaml
index 3f0224eefd..209ddb62d3 100644
--- a/java-showcase/.OwlBot-hermetic.yaml
+++ b/java-showcase/.OwlBot-hermetic.yaml
@@ -21,6 +21,7 @@ deep-remove-regex:
 
 deep-preserve-regex:
 - "/gapic-showcase/src/test"
+- "/gapic-showcase/src/main/java/com/google/showcase/v1beta1/Version.java"
 
 deep-copy-regex:
 - source: "/schema/google/showcase/(v.*)/.*-java/proto-.*/src"
diff --git a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/Version.java b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/Version.java
new file mode 100644
index 0000000000..2e43dbff55
--- /dev/null
+++ b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+public final class Version {
+  // {x-version-update-start:gapic-showcase:current}
+  public static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStubSettings.java b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStubSettings.java
index 4c1fc8b468..72c98e6400 100644
--- a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStubSettings.java
+++ b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStubSettings.java
@@ -399,6 +399,7 @@ protected LibraryMetadata getLibraryMetadata() {
     return LibraryMetadata.newBuilder()
         .setArtifactName("com.google.cloud:gapic-showcase")
         .setRepository("googleapis/sdk-platform-java")
+        .setVersion(Version.VERSION)
         .build();
   }
 
diff --git a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStubSettings.java b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStubSettings.java
index 927f1b2698..ebd2807839 100644
--- a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStubSettings.java
+++ b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStubSettings.java
@@ -588,6 +588,7 @@ protected LibraryMetadata getLibraryMetadata() {
     return LibraryMetadata.newBuilder()
         .setArtifactName("com.google.cloud:gapic-showcase")
         .setRepository("googleapis/sdk-platform-java")
+        .setVersion(Version.VERSION)
         .build();
   }
 
diff --git a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStubSettings.java b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStubSettings.java
index 69e2f917cb..e84b8628cb 100644
--- a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStubSettings.java
+++ b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStubSettings.java
@@ -419,6 +419,7 @@ protected LibraryMetadata getLibraryMetadata() {
     return LibraryMetadata.newBuilder()
         .setArtifactName("com.google.cloud:gapic-showcase")
         .setRepository("googleapis/sdk-platform-java")
+        .setVersion(Version.VERSION)
         .build();
   }
 
diff --git a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStubSettings.java b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStubSettings.java
index cca83350cb..8da3288193 100644
--- a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStubSettings.java
+++ b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStubSettings.java
@@ -594,6 +594,7 @@ protected LibraryMetadata getLibraryMetadata() {
     return LibraryMetadata.newBuilder()
         .setArtifactName("com.google.cloud:gapic-showcase")
         .setRepository("googleapis/sdk-platform-java")
+        .setVersion(Version.VERSION)
         .build();
   }
 
diff --git a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStubSettings.java b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStubSettings.java
index 8362011625..f2dbe6f1af 100644
--- a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStubSettings.java
+++ b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStubSettings.java
@@ -390,6 +390,7 @@ protected LibraryMetadata getLibraryMetadata() {
     return LibraryMetadata.newBuilder()
         .setArtifactName("com.google.cloud:gapic-showcase")
         .setRepository("googleapis/sdk-platform-java")
+        .setVersion(Version.VERSION)
         .build();
   }
 
diff --git a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStubSettings.java b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStubSettings.java
index d97a9c18c0..55bde4b66e 100644
--- a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStubSettings.java
+++ b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStubSettings.java
@@ -502,6 +502,7 @@ protected LibraryMetadata getLibraryMetadata() {
     return LibraryMetadata.newBuilder()
         .setArtifactName("com.google.cloud:gapic-showcase")
         .setRepository("googleapis/sdk-platform-java")
+        .setVersion(Version.VERSION)
         .build();
   }
 
diff --git a/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/Version.java b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/Version.java
new file mode 100644
index 0000000000..4009043dd5
--- /dev/null
+++ b/java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:gapic-showcase:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/java-showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITOtelTracing.java b/java-showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITOtelTracing.java
index d8ca71e848..e0f0295cc9 100644
--- a/java-showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITOtelTracing.java
+++ b/java-showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITOtelTracing.java
@@ -136,6 +136,13 @@ void testTracing_successfulEcho_grpc() throws Exception {
                   .getAttributes()
                   .get(AttributeKey.stringKey(ObservabilityAttributes.GRPC_RPC_METHOD_ATTRIBUTE)))
           .isEqualTo("google.showcase.v1beta1.Echo/Echo");
+      // {x-version-update-start:gapic-showcase:current}
+      assertThat(
+              attemptSpan
+                  .getAttributes()
+                  .get(AttributeKey.stringKey(ObservabilityAttributes.VERSION_ATTRIBUTE)))
+          .isEqualTo("0.0.0-SNAPSHOT");
+      // {x-version-update-end}
     }
   }
 
diff --git a/release-please-config.json b/release-please-config.json
index 113ec43bb5..db518b5db8 100644
--- a/release-please-config.json
+++ b/release-please-config.json
@@ -16,7 +16,8 @@
         ".cloudbuild/library_generation/library_generation_airlock.Dockerfile",
 		"hermetic_build/library_generation/owlbot/templates/java_library/.kokoro/presubmit/graalvm-native-a.cfg",
 		"hermetic_build/library_generation/owlbot/templates/java_library/.kokoro/presubmit/graalvm-native-b.cfg",
-		"hermetic_build/library_generation/owlbot/templates/java_library/.kokoro/presubmit/graalvm-native-c.cfg"
+		"hermetic_build/library_generation/owlbot/templates/java_library/.kokoro/presubmit/graalvm-native-c.cfg",
+		"java-showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/Version.java"
 
       ]
     }
diff --git a/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStubSettings.java b/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStubSettings.java
index 184451d6db..b603e4ed4a 100644
--- a/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStubSettings.java
+++ b/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/ConnectionServiceStubSettings.java
@@ -296,7 +296,7 @@ protected ConnectionServiceStubSettings(Builder settingsBuilder) throws IOExcept
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for ConnectionServiceStubSettings. */
diff --git a/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/TetherStubSettings.java b/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/TetherStubSettings.java
index 227a68e91f..22d8803b31 100644
--- a/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/TetherStubSettings.java
+++ b/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/TetherStubSettings.java
@@ -195,7 +195,7 @@ protected TetherStubSettings(Builder settingsBuilder) throws IOException {
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for TetherStubSettings. */
diff --git a/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/Version.java b/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/Version.java
new file mode 100644
index 0000000000..4b240da5e8
--- /dev/null
+++ b/test/integration/goldens/apigeeconnect/src/com/google/cloud/apigeeconnect/v1/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.apigeeconnect.v1.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/asset/src/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java b/test/integration/goldens/asset/src/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
index dddb8294c7..61865afb31 100644
--- a/test/integration/goldens/asset/src/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
+++ b/test/integration/goldens/asset/src/com/google/cloud/asset/v1/stub/AssetServiceStubSettings.java
@@ -729,7 +729,7 @@ protected AssetServiceStubSettings(Builder settingsBuilder) throws IOException {
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for AssetServiceStubSettings. */
diff --git a/test/integration/goldens/asset/src/com/google/cloud/asset/v1/stub/Version.java b/test/integration/goldens/asset/src/com/google/cloud/asset/v1/stub/Version.java
new file mode 100644
index 0000000000..b62c82a4ce
--- /dev/null
+++ b/test/integration/goldens/asset/src/com/google/cloud/asset/v1/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.asset.v1.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/bigtable/src/com/google/cloud/bigtable/data/v2/stub/BigtableStubSettings.java b/test/integration/goldens/bigtable/src/com/google/cloud/bigtable/data/v2/stub/BigtableStubSettings.java
index 23374ac780..93e179072d 100644
--- a/test/integration/goldens/bigtable/src/com/google/cloud/bigtable/data/v2/stub/BigtableStubSettings.java
+++ b/test/integration/goldens/bigtable/src/com/google/cloud/bigtable/data/v2/stub/BigtableStubSettings.java
@@ -261,7 +261,7 @@ protected BigtableStubSettings(Builder settingsBuilder) throws IOException {
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for BigtableStubSettings. */
diff --git a/test/integration/goldens/bigtable/src/com/google/cloud/bigtable/data/v2/stub/Version.java b/test/integration/goldens/bigtable/src/com/google/cloud/bigtable/data/v2/stub/Version.java
new file mode 100644
index 0000000000..b5dc9e1686
--- /dev/null
+++ b/test/integration/goldens/bigtable/src/com/google/cloud/bigtable/data/v2/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.bigtable.data.v2.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/AddressesStubSettings.java b/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/AddressesStubSettings.java
index 3ae9929a15..046706b2c8 100644
--- a/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/AddressesStubSettings.java
+++ b/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/AddressesStubSettings.java
@@ -404,7 +404,7 @@ protected AddressesStubSettings(Builder settingsBuilder) throws IOException {
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for AddressesStubSettings. */
diff --git a/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/RegionOperationsStubSettings.java b/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/RegionOperationsStubSettings.java
index b2d4479676..b3dbfe2957 100644
--- a/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/RegionOperationsStubSettings.java
+++ b/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/RegionOperationsStubSettings.java
@@ -206,7 +206,7 @@ protected RegionOperationsStubSettings(Builder settingsBuilder) throws IOExcepti
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for RegionOperationsStubSettings. */
diff --git a/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/Version.java b/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/Version.java
new file mode 100644
index 0000000000..b3be881a77
--- /dev/null
+++ b/test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.compute.v1small.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/credentials/src/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java b/test/integration/goldens/credentials/src/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java
index 425b0e81fe..679064dd4c 100644
--- a/test/integration/goldens/credentials/src/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java
+++ b/test/integration/goldens/credentials/src/com/google/cloud/iam/credentials/v1/stub/IamCredentialsStubSettings.java
@@ -259,7 +259,7 @@ protected IamCredentialsStubSettings(Builder settingsBuilder) throws IOException
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for IamCredentialsStubSettings. */
diff --git a/test/integration/goldens/credentials/src/com/google/cloud/iam/credentials/v1/stub/Version.java b/test/integration/goldens/credentials/src/com/google/cloud/iam/credentials/v1/stub/Version.java
new file mode 100644
index 0000000000..f10f917913
--- /dev/null
+++ b/test/integration/goldens/credentials/src/com/google/cloud/iam/credentials/v1/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.iam.credentials.v1.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/iam/src/com/google/iam/v1/stub/IAMPolicyStubSettings.java b/test/integration/goldens/iam/src/com/google/iam/v1/stub/IAMPolicyStubSettings.java
index 23681831f5..673791070b 100644
--- a/test/integration/goldens/iam/src/com/google/iam/v1/stub/IAMPolicyStubSettings.java
+++ b/test/integration/goldens/iam/src/com/google/iam/v1/stub/IAMPolicyStubSettings.java
@@ -210,7 +210,7 @@ protected IAMPolicyStubSettings(Builder settingsBuilder) throws IOException {
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for IAMPolicyStubSettings. */
diff --git a/test/integration/goldens/iam/src/com/google/iam/v1/stub/Version.java b/test/integration/goldens/iam/src/com/google/iam/v1/stub/Version.java
new file mode 100644
index 0000000000..026380e791
--- /dev/null
+++ b/test/integration/goldens/iam/src/com/google/iam/v1/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.iam.v1.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/kms/src/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java b/test/integration/goldens/kms/src/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java
index 614f4a5b75..850140cc82 100644
--- a/test/integration/goldens/kms/src/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java
+++ b/test/integration/goldens/kms/src/com/google/cloud/kms/v1/stub/KeyManagementServiceStubSettings.java
@@ -746,7 +746,7 @@ protected KeyManagementServiceStubSettings(Builder settingsBuilder) throws IOExc
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for KeyManagementServiceStubSettings. */
diff --git a/test/integration/goldens/kms/src/com/google/cloud/kms/v1/stub/Version.java b/test/integration/goldens/kms/src/com/google/cloud/kms/v1/stub/Version.java
new file mode 100644
index 0000000000..0bca6dc5ab
--- /dev/null
+++ b/test/integration/goldens/kms/src/com/google/cloud/kms/v1/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.kms.v1.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/library/src/com/google/cloud/example/library/v1/stub/LibraryServiceStubSettings.java b/test/integration/goldens/library/src/com/google/cloud/example/library/v1/stub/LibraryServiceStubSettings.java
index f4774ebdb5..23c398f5ad 100644
--- a/test/integration/goldens/library/src/com/google/cloud/example/library/v1/stub/LibraryServiceStubSettings.java
+++ b/test/integration/goldens/library/src/com/google/cloud/example/library/v1/stub/LibraryServiceStubSettings.java
@@ -428,7 +428,7 @@ protected LibraryServiceStubSettings(Builder settingsBuilder) throws IOException
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for LibraryServiceStubSettings. */
diff --git a/test/integration/goldens/library/src/com/google/cloud/example/library/v1/stub/Version.java b/test/integration/goldens/library/src/com/google/cloud/example/library/v1/stub/Version.java
new file mode 100644
index 0000000000..4e7c1a4d04
--- /dev/null
+++ b/test/integration/goldens/library/src/com/google/cloud/example/library/v1/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.example.library.v1.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java b/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java
index 76d8a31316..d96599c8aa 100644
--- a/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java
+++ b/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/ConfigServiceV2StubSettings.java
@@ -681,7 +681,7 @@ protected ConfigServiceV2StubSettings(Builder settingsBuilder) throws IOExceptio
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for ConfigServiceV2StubSettings. */
diff --git a/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java b/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java
index 38a71668b1..6010757c6a 100644
--- a/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java
+++ b/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/LoggingServiceV2StubSettings.java
@@ -528,7 +528,7 @@ protected LoggingServiceV2StubSettings(Builder settingsBuilder) throws IOExcepti
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for LoggingServiceV2StubSettings. */
diff --git a/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java b/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java
index 12ab94379c..1625572efc 100644
--- a/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java
+++ b/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/MetricsServiceV2StubSettings.java
@@ -298,7 +298,7 @@ protected MetricsServiceV2StubSettings(Builder settingsBuilder) throws IOExcepti
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for MetricsServiceV2StubSettings. */
diff --git a/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/Version.java b/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/Version.java
new file mode 100644
index 0000000000..2bf3969c4d
--- /dev/null
+++ b/test/integration/goldens/logging/src/com/google/cloud/logging/v2/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.logging.v2.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java b/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
index 13b7cf117d..067d40923a 100644
--- a/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
+++ b/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/PublisherStubSettings.java
@@ -566,7 +566,7 @@ protected PublisherStubSettings(Builder settingsBuilder) throws IOException {
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for PublisherStubSettings. */
diff --git a/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java b/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java
index 801f9f04ac..6feb16de0c 100644
--- a/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java
+++ b/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/SchemaServiceStubSettings.java
@@ -429,7 +429,7 @@ protected SchemaServiceStubSettings(Builder settingsBuilder) throws IOException
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for SchemaServiceStubSettings. */
diff --git a/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java b/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
index c6e2c9714c..4e1bcbc259 100644
--- a/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
+++ b/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/SubscriberStubSettings.java
@@ -481,7 +481,7 @@ protected SubscriberStubSettings(Builder settingsBuilder) throws IOException {
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for SubscriberStubSettings. */
diff --git a/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/Version.java b/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/Version.java
new file mode 100644
index 0000000000..518f8c55e4
--- /dev/null
+++ b/test/integration/goldens/pubsub/src/com/google/cloud/pubsub/v1/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.pubsub.v1.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/redis/src/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java b/test/integration/goldens/redis/src/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java
index 6551856c0f..086b575f4b 100644
--- a/test/integration/goldens/redis/src/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java
+++ b/test/integration/goldens/redis/src/com/google/cloud/redis/v1beta1/stub/CloudRedisStubSettings.java
@@ -481,7 +481,7 @@ protected CloudRedisStubSettings(Builder settingsBuilder) throws IOException {
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for CloudRedisStubSettings. */
diff --git a/test/integration/goldens/redis/src/com/google/cloud/redis/v1beta1/stub/Version.java b/test/integration/goldens/redis/src/com/google/cloud/redis/v1beta1/stub/Version.java
new file mode 100644
index 0000000000..1f91550304
--- /dev/null
+++ b/test/integration/goldens/redis/src/com/google/cloud/redis/v1beta1/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.redis.v1beta1.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}
diff --git a/test/integration/goldens/storage/src/com/google/storage/v2/stub/StorageStubSettings.java b/test/integration/goldens/storage/src/com/google/storage/v2/stub/StorageStubSettings.java
index 1cb7525963..2ffbba4bc9 100644
--- a/test/integration/goldens/storage/src/com/google/storage/v2/stub/StorageStubSettings.java
+++ b/test/integration/goldens/storage/src/com/google/storage/v2/stub/StorageStubSettings.java
@@ -699,7 +699,7 @@ protected StorageStubSettings(Builder settingsBuilder) throws IOException {
 
   @Override
   protected LibraryMetadata getLibraryMetadata() {
-    return LibraryMetadata.newBuilder().build();
+    return LibraryMetadata.newBuilder().setVersion(Version.VERSION).build();
   }
 
   /** Builder for StorageStubSettings. */
diff --git a/test/integration/goldens/storage/src/com/google/storage/v2/stub/Version.java b/test/integration/goldens/storage/src/com/google/storage/v2/stub/Version.java
new file mode 100644
index 0000000000..54f11445df
--- /dev/null
+++ b/test/integration/goldens/storage/src/com/google/storage/v2/stub/Version.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.storage.v2.stub;
+
+import com.google.api.core.InternalApi;
+
+@InternalApi("For internal use only")
+final class Version {
+  // {x-version-update-start:null:current}
+  static final String VERSION = "0.0.0-SNAPSHOT";
+  // {x-version-update-end}
+
+}