diff --git a/packages/router/add-dts-module-augmentation.mjs b/packages/router/add-dts-module-augmentation.mjs
new file mode 100644
index 000000000..84d738583
--- /dev/null
+++ b/packages/router/add-dts-module-augmentation.mjs
@@ -0,0 +1,24 @@
+import * as fs from 'node:fs/promises'
+
+async function patchVueRouterDts() {
+  const content = await fs.readFile('./src/globalExtensions.ts', {
+    encoding: 'utf-8',
+  })
+  const moduleAugmentationIdx = content.indexOf('/**')
+  if (moduleAugmentationIdx === -1) {
+    throw new Error(
+      'Cannot find module augmentation in globalExtensions.ts, first /** comment is expected to start module augmentation'
+    )
+  }
+  const targetContent = await fs.readFile('./dist/vue-router.d.ts', {
+    encoding: 'utf-8',
+  })
+  await fs.writeFile(
+    './dist/vue-router.d.ts',
+    `${targetContent}
+${content.slice(moduleAugmentationIdx)}`,
+    { encoding: 'utf8' }
+  )
+}
+
+patchVueRouterDts()
diff --git a/packages/router/package.json b/packages/router/package.json
index ba06a10be..d519c72c1 100644
--- a/packages/router/package.json
+++ b/packages/router/package.json
@@ -91,7 +91,7 @@
     "dev": "vitest --ui",
     "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s -r 1",
     "build": "rimraf dist && rollup -c rollup.config.mjs",
-    "build:dts": "api-extractor run --local --verbose && tail -n +10 src/globalExtensions.ts >> dist/vue-router.d.ts",
+    "build:dts": "api-extractor run --local --verbose && node ./add-dts-module-augmentation.mjs",
     "build:playground": "vue-tsc --noEmit && vite build --config playground/vite.config.ts",
     "build:e2e": "vue-tsc --noEmit && vite build --config e2e/vite.config.mjs",
     "build:size": "pnpm run build && rollup -c size-checks/rollup.config.mjs",