diff --git a/src/utilities/formatSdl.js b/src/utilities/formatSdl.js
index 0d59f5f..0b0dc65 100644
--- a/src/utilities/formatSdl.js
+++ b/src/utilities/formatSdl.js
@@ -21,11 +21,12 @@ const sortSchema = (key, value, options: OptionsType) => {
     sortArguments && key === 'arguments'
   ) {
     return value.slice().sort((a, b) => {
-      if (a.kind === 'SchemaDefinition') {
+      const nonNamedKinds = ['SchemaDefinition', 'SchemaExtension'];
+      if (nonNamedKinds.includes(a.kind)) {
         return -1;
       }
 
-      if (b.kind === 'SchemaDefinition') {
+      if (nonNamedKinds.includes(b.kind)) {
         return 1;
       }
 
diff --git a/test/format-graphql/utilities/formatSdl.js b/test/format-graphql/utilities/formatSdl.js
index 3e1cef5..3529764 100644
--- a/test/format-graphql/utilities/formatSdl.js
+++ b/test/format-graphql/utilities/formatSdl.js
@@ -99,6 +99,29 @@ test('does not strip description', (t) => {
   t.is(formatSdl(input), expectedOutput);
 });
 
+test('supports schema extensions', (t) => {
+  const input = `
+  extend schema
+  @link(url: "https://specs.apollo.dev/federation/v2.0",
+    import: ["@key", "@shareable"])
+
+  type GenericResponse @shareable {
+    success: Boolean!
+    message: String
+  }
+`;
+
+  const expectedOutput = `extend schema @link(url: "https://specs.apollo.dev/federation/v2.0", import: ["@key", "@shareable"])
+
+type GenericResponse @shareable {
+  message: String
+  success: Boolean!
+}
+`;
+
+  t.is(formatSdl(input), expectedOutput);
+});
+
 // @see https://github.com/graphql/graphql-js/issues/2241#issuecomment-546711570
 // eslint-disable-next-line ava/no-skip-test
 test.skip('does not strip comments', (t) => {