diff --git a/package-lock.json b/package-lock.json
index 0f8f543..8383f8b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,7 +16,7 @@
         "deploygate-mcp": "dist/index.js"
       },
       "devDependencies": {
-        "@types/node": "^25.7.0",
+        "@types/node": "^25.9.1",
         "esbuild": "^0.28.0",
         "typescript": "^6.0.3",
         "vitest": "^4.1.6",
@@ -898,13 +898,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "25.7.0",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.7.0.tgz",
-      "integrity": "sha512-z+pdZyxE+RTQE9AcboAZCb4otwcrvgHD+GlBpPgn0emDVt0ohrTMhAwlr2Wd9nZ+nihhYFxO2pThz3C5qSu2Eg==",
+      "version": "25.9.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.9.1.tgz",
+      "integrity": "sha512-xfrlY7UD5rMJk3ZVJP8BNzS28J36YJg+xp+LPXV1TdWxr8uMH5A860QNxYDGQe/ylDSgjxE52Q9VnO7p75tJxg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.21.0"
+        "undici-types": ">=7.24.0 <7.24.7"
       }
     },
     "node_modules/@vitest/expect": {
@@ -2662,9 +2662,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.21.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.21.0.tgz",
-      "integrity": "sha512-w9IMgQrz4O0YN1LtB7K5P63vhlIOvC7opSmouCJ+ZywlPAlO9gIkJ+otk6LvGpAs2wg4econaCz3TvQ9xPoyuQ==",
+      "version": "7.24.6",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.24.6.tgz",
+      "integrity": "sha512-WRNW+sJgj5OBN4/0JpHFqtqzhpbnV0GuB+OozA9gCL7a993SmU+1JBZCzLNxYsbMfIeDL+lTsphD5jN5N+n0zg==",
       "dev": true,
       "license": "MIT"
     },
diff --git a/package.json b/package.json
index 63dd81c..07124e2 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "zod": "^4.4.3"
   },
   "devDependencies": {
-    "@types/node": "^25.7.0",
+    "@types/node": "^25.9.1",
     "esbuild": "^0.28.0",
     "typescript": "^6.0.3",
     "vitest": "^4.1.6",