diff --git a/package-lock.json b/package-lock.json
index 631a4c5..ec2059e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,7 @@
         "@actions/exec": "^3.0.0"
       },
       "devDependencies": {
-        "@types/node": "^24.13.4",
+        "@types/node": "^26.5.0",
         "@vitest/coverage-v8": "^5.0.0",
         "esbuild": "^0.28.2",
         "eslint": "^10.10.0",
@@ -1159,13 +1159,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "24.13.4",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.13.4.tgz",
-      "integrity": "sha512-YJ7EqCstVTzIr0fMr7qul/977en+pQHrfmuKIo6Zr9i75Be21dr3MovcfvGtyvi2HAUrRerWps5sMO9I7WaxDw==",
+      "version": "26.5.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.5.0.tgz",
+      "integrity": "sha512-dVSGpriSoCgz8WnDNTuSSuSv1PC/ALXihO4ulRZt7Md8k9mlbdin3lGOcDE8SnWOgf513ByWlXd7BK4azmyg/A==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.18.0"
+        "undici-types": "~8.9.0"
       }
     },
     "node_modules/@typescript-eslint/eslint-plugin": {
@@ -2923,9 +2923,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
-      "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
+      "version": "8.9.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.9.0.tgz",
+      "integrity": "sha512-KTDyRTYX8sWmKXAikPHHSyc63CRPETMctyjKFupcC6OBLXT3xsN0e9aF7m+mIXutFWpUXuedtowG7iLOzp0kQg==",
       "dev": true,
       "license": "MIT"
     },
diff --git a/package.json b/package.json
index 693536b..e154df9 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "@actions/exec": "^3.0.0"
   },
   "devDependencies": {
-    "@types/node": "^24.13.4",
+    "@types/node": "^26.5.0",
     "@vitest/coverage-v8": "^5.0.0",
     "esbuild": "^0.28.2",
     "eslint": "^10.10.0",