diff --git a/mcp-client-typescript/package-lock.json b/mcp-client-typescript/package-lock.json
index 245fc296..f34f5876 100644
--- a/mcp-client-typescript/package-lock.json
+++ b/mcp-client-typescript/package-lock.json
@@ -14,7 +14,7 @@
         "dotenv": "^18.0.1"
       },
       "devDependencies": {
-        "@types/node": "^24.13.4",
+        "@types/node": "^26.6.2",
         "typescript": "^7.0.2"
       },
       "engines": {
@@ -88,13 +88,13 @@
       "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": "26.6.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.6.2.tgz",
+      "integrity": "sha512-X1P21scMv4zGKLYqjdGjaKa7COa0RKVYYZZN/NfvLQ1JegxFhdhpZG/Lyn8AXx6CDUavKAd11v6BvfpkDByK8g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.18.0"
+        "undici-types": "~8.9.0"
       }
     },
     "node_modules/@typescript/typescript-aix-ppc64": {
@@ -612,9 +612,9 @@
       }
     },
     "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/mcp-client-typescript/package.json b/mcp-client-typescript/package.json
index 8560c3c0..103e44df 100644
--- a/mcp-client-typescript/package.json
+++ b/mcp-client-typescript/package.json
@@ -16,7 +16,7 @@
     "dotenv": "^18.0.1"
   },
   "devDependencies": {
-    "@types/node": "^24.13.4",
+    "@types/node": "^26.6.2",
     "typescript": "^7.0.2"
   },
   "engines": {