diff --git a/buildtools-v3/protobuf-version.txt b/buildtools-v3/protobuf-version.txt
index 4de1667..32933e6 100644
--- a/buildtools-v3/protobuf-version.txt
+++ b/buildtools-v3/protobuf-version.txt
@@ -1 +1 @@
-v25.8
\ No newline at end of file
+v25.9
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 54b88d6..c5dc927 100644
--- a/pom.xml
+++ b/pom.xml
@@ -75,7 +75,7 @@
     <!-- runtime versions -->
     <chicory.version>1.7.5</chicory.version>
     <!-- This version should stay aligned with "buildtools-v3/protobuf-version.txt" -->
-    <protobuf-v3.version>3.25.8</protobuf-v3.version>
+    <protobuf-v3.version>3.25.9</protobuf-v3.version>
     <protobuf-v4.version>4.34.1</protobuf-v4.version>
     <zerofs.version>0.1.0</zerofs.version>
   </properties>
diff --git a/wasm/protoc-wrapper-v3.wasm b/wasm/protoc-wrapper-v3.wasm
index ad524b1..f03eb5c 100644
Binary files a/wasm/protoc-wrapper-v3.wasm and b/wasm/protoc-wrapper-v3.wasm differ