diff --git a/src/test/vscode-notebook-perf/package-lock.json b/src/test/vscode-notebook-perf/package-lock.json
index 32e48812e..13ca221a9 100644
--- a/src/test/vscode-notebook-perf/package-lock.json
+++ b/src/test/vscode-notebook-perf/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.0.1",
       "devDependencies": {
         "@types/glob": "^9.0.0",
-        "@types/mocha": "^9.1.0",
+        "@types/mocha": "^10.0.10",
         "@types/node": "^26.5.1",
         "@types/vscode": "^1.138.0",
         "@vscode/test-cli": "^0.0.15",
@@ -174,9 +174,9 @@
       "license": "MIT"
     },
     "node_modules/@types/mocha": {
-      "version": "9.1.1",
-      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-9.1.1.tgz",
-      "integrity": "sha512-Z61JK7DKDtdKTWwLeElSEBcWGRLY8g95ic5FoQqI9CMx0ns/Ghep3B4DfcEimiKMvtamNVULVNKEsiwV3aQmXw==",
+      "version": "10.0.10",
+      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-10.0.10.tgz",
+      "integrity": "sha512-xPyYSz1cMPnJQhl0CLMH68j3gprKZaTjG3s5Vi+fDgx+uhG9NOXwbVt52eFS8ECyXhyKcjDLCBEqBExKuiZb7Q==",
       "dev": true,
       "license": "MIT"
     },
@@ -221,13 +221,6 @@
         "node": ">=22"
       }
     },
-    "node_modules/@vscode/test-cli/node_modules/@types/mocha": {
-      "version": "10.0.10",
-      "resolved": "https://registry.npmjs.org/@types/mocha/-/mocha-10.0.10.tgz",
-      "integrity": "sha512-xPyYSz1cMPnJQhl0CLMH68j3gprKZaTjG3s5Vi+fDgx+uhG9NOXwbVt52eFS8ECyXhyKcjDLCBEqBExKuiZb7Q==",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/@vscode/test-cli/node_modules/ansi-regex": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
diff --git a/src/test/vscode-notebook-perf/package.json b/src/test/vscode-notebook-perf/package.json
index 3f2665741..fcfd4877c 100644
--- a/src/test/vscode-notebook-perf/package.json
+++ b/src/test/vscode-notebook-perf/package.json
@@ -27,7 +27,7 @@
   "description": "",
   "devDependencies": {
     "@types/glob": "^9.0.0",
-    "@types/mocha": "^9.1.0",
+    "@types/mocha": "^10.0.10",
     "@types/node": "^26.5.1",
     "@types/vscode": "^1.138.0",
     "@vscode/test-cli": "^0.0.15",