diff --git a/typescript/package-lock.json b/typescript/package-lock.json
index 409681d..10cbf24 100644
--- a/typescript/package-lock.json
+++ b/typescript/package-lock.json
@@ -10,7 +10,7 @@
       "license": "Apache-2.0",
       "devDependencies": {
         "@msgpack/msgpack": "^3.1.3",
-        "@types/node": "^25.0.9",
+        "@types/node": "^26.6.1",
         "c8": "^11.0.0",
         "tsx": "^4.21.0",
         "typescript": "^5.9.3"
@@ -527,13 +527,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "25.0.9",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.0.9.tgz",
-      "integrity": "sha512-/rpCXHlCWeqClNBwUhDcusJxXYDjZTyE8v5oTO7WbL8eij2nKhUeU89/6xgjU7N4/Vh3He0BtyhJdQbDyhiXAw==",
+      "version": "26.6.1",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.6.1.tgz",
+      "integrity": "sha512-VqGJBMCtdhqkBUCcBLvywI0NJ+KLuVzgNnlBUNFOQjqVxzo2lxLUNg1DSey8+u2u6ktswSAxg+s68QLzWHNOuA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~7.16.0"
+        "undici-types": "~8.9.0"
       }
     },
     "node_modules/ansi-regex": {
@@ -1202,9 +1202,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.16.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
-      "integrity": "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==",
+      "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/typescript/package.json b/typescript/package.json
index 06e1bda..418a65f 100644
--- a/typescript/package.json
+++ b/typescript/package.json
@@ -34,7 +34,7 @@
   },
   "devDependencies": {
     "@msgpack/msgpack": "^3.1.3",
-    "@types/node": "^25.0.9",
+    "@types/node": "^26.6.1",
     "c8": "^11.0.0",
     "tsx": "^4.21.0",
     "typescript": "^5.9.3"