diff --git a/test/harness/package-lock.json b/test/harness/package-lock.json
index 1e05947a..59121cad 100644
--- a/test/harness/package-lock.json
+++ b/test/harness/package-lock.json
@@ -10,7 +10,7 @@
       "license": "ISC",
       "devDependencies": {
         "@github/copilot": "^0.0.399",
-        "@types/node": "^25.0.3",
+        "@types/node": "^25.1.0",
         "openai": "^6.15.0",
         "tsx": "^4.21.0",
         "typescript": "^5.9.3",
@@ -928,9 +928,9 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "25.0.3",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.0.3.tgz",
-      "integrity": "sha512-W609buLVRVmeW693xKfzHeIV6nJGGz98uCPfeXI1ELMLXVeKYZ9m15fAMSaUPBHYLGFsVRcMmSCksQOrZV9BYA==",
+      "version": "25.1.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.1.0.tgz",
+      "integrity": "sha512-t7frlewr6+cbx+9Ohpl0NOTKXZNV9xHRmNOvql47BFJKcEG1CxtxlPEEe+gR9uhVWM4DwhnvTF110mIL4yP9RA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/test/harness/package.json b/test/harness/package.json
index e859b49b..7a2c952e 100644
--- a/test/harness/package.json
+++ b/test/harness/package.json
@@ -12,7 +12,7 @@
   },
   "devDependencies": {
     "@github/copilot": "^0.0.399",
-    "@types/node": "^25.0.3",
+    "@types/node": "^25.1.0",
     "openai": "^6.15.0",
     "tsx": "^4.21.0",
     "typescript": "^5.9.3",