diff --git a/packages/language-core/package.json b/packages/language-core/package.json
index 783aa8c0fb..3ce5b5cc8d 100644
--- a/packages/language-core/package.json
+++ b/packages/language-core/package.json
@@ -17,7 +17,7 @@
 		"@vue/compiler-dom": "^3.5.0",
 		"@vue/compiler-vue2": "^2.7.16",
 		"@vue/shared": "^3.5.0",
-		"alien-signals": "^0.4.4",
+		"alien-signals": "^0.4.9",
 		"minimatch": "^9.0.3",
 		"muggle-string": "^0.4.1",
 		"path-browserify": "^1.0.1"
diff --git a/packages/language-service/package.json b/packages/language-service/package.json
index 244f7ce6c8..c46a5f8e38 100644
--- a/packages/language-service/package.json
+++ b/packages/language-service/package.json
@@ -24,7 +24,7 @@
 		"@vue/language-core": "2.1.10",
 		"@vue/shared": "^3.5.0",
 		"@vue/typescript-plugin": "2.1.10",
-		"alien-signals": "^0.4.4",
+		"alien-signals": "^0.4.9",
 		"path-browserify": "^1.0.1",
 		"volar-service-css": "0.0.62",
 		"volar-service-emmet": "0.0.62",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 686d4f0fbc..37477eb1f1 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -111,8 +111,8 @@ importers:
         specifier: ^3.5.0
         version: 3.5.13
       alien-signals:
-        specifier: ^0.4.4
-        version: 0.4.5
+        specifier: ^0.4.9
+        version: 0.4.9
       minimatch:
         specifier: ^9.0.3
         version: 9.0.5
@@ -209,8 +209,8 @@ importers:
         specifier: 2.1.10
         version: link:../typescript-plugin
       alien-signals:
-        specifier: ^0.4.4
-        version: 0.4.5
+        specifier: ^0.4.9
+        version: 0.4.9
       path-browserify:
         specifier: ^1.0.1
         version: 1.0.1
@@ -1275,8 +1275,8 @@ packages:
     resolution: {integrity: sha512-4I7Td01quW/RpocfNayFdFVk1qSuoh0E7JrbRJ16nH01HhKFQ88INq9Sd+nd72zqRySlr9BmDA8xlEJ6vJMrYA==}
     engines: {node: '>=8'}
 
-  alien-signals@0.4.5:
-    resolution: {integrity: sha512-cv3CleJUCuaTSGpmiXNP1KPDUZXrN2H6cuFPmijTWIOTJfwXRKvLaYaaP4Iw6KZD1cR//x7dKd0ZuLvaiP314g==}
+  alien-signals@0.4.9:
+    resolution: {integrity: sha512-piRGlMgQ65uRiY06mGU7I432AwPwAGf64TK1RXtM1Px4pPfLMTGI9TmsHTfioW1GukZRsNzkVQ/uHjhhd231Ow==}
 
   ansi-escapes@4.3.2:
     resolution: {integrity: sha512-gKXj5ALrKWQLsYG9jlTRmR/xKluxHV+Z9QEwNIgCfM1/uwPMCuzVVnh5mwTd+OuBZcwSIMbqssNWRm1lE51QaQ==}
@@ -4521,7 +4521,7 @@ snapshots:
       clean-stack: 2.2.0
       indent-string: 4.0.0
 
-  alien-signals@0.4.5: {}
+  alien-signals@0.4.9: {}
 
   ansi-escapes@4.3.2:
     dependencies: