diff --git a/src/test/vscode-notebook-perf/package-lock.json b/src/test/vscode-notebook-perf/package-lock.json
index 32e48812e6..8a614d5d41 100644
--- a/src/test/vscode-notebook-perf/package-lock.json
+++ b/src/test/vscode-notebook-perf/package-lock.json
@@ -10,7 +10,7 @@
       "devDependencies": {
         "@types/glob": "^9.0.0",
         "@types/mocha": "^9.1.0",
-        "@types/node": "^26.5.1",
+        "@types/node": "^26.6.3",
         "@types/vscode": "^1.138.0",
         "@vscode/test-cli": "^0.0.15",
         "@vscode/test-electron": "^3.1.0",
@@ -181,9 +181,9 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "26.5.1",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.5.1.tgz",
-      "integrity": "sha512-CzNm2FezW4VR/LjG6yUdiEgLE/rAQ9Slj5gCu/C2VrdcW7I0ahNZ8DRbHT7zOZ6r3ONgd/bsQIeSaoDGrd1C6g==",
+      "version": "26.6.3",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.6.3.tgz",
+      "integrity": "sha512-dsqMQQoeTLqu9wynDD00q573mNzso3IdQOAfHRJqLCcmCFPoGo9A1bDpUcv/9tnKpErQWv9uKeGfl37EIS02Yg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/src/test/vscode-notebook-perf/package.json b/src/test/vscode-notebook-perf/package.json
index 3f2665741e..0ccf97b969 100644
--- a/src/test/vscode-notebook-perf/package.json
+++ b/src/test/vscode-notebook-perf/package.json
@@ -28,7 +28,7 @@
   "devDependencies": {
     "@types/glob": "^9.0.0",
     "@types/mocha": "^9.1.0",
-    "@types/node": "^26.5.1",
+    "@types/node": "^26.6.3",
     "@types/vscode": "^1.138.0",
     "@vscode/test-cli": "^0.0.15",
     "@vscode/test-electron": "^3.1.0",