diff --git a/extensions/ql-vscode/package-lock.json b/extensions/ql-vscode/package-lock.json
index 1409320640c..8fffc3986d5 100644
--- a/extensions/ql-vscode/package-lock.json
+++ b/extensions/ql-vscode/package-lock.json
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         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -7333,16 +7359,16 @@
       }
     },
     "node_modules/@typescript-eslint/type-utils/node_modules/@typescript-eslint/utils": {
-      "version": "8.19.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.19.0.tgz",
-      "integrity": "sha512-PTBG+0oEMPH9jCZlfg07LCB2nYI0I317yyvXGfxnvGvw4SHIOuRnQ3kadyyXY6tGdChusIHIbM5zfIbp4M6tCg==",
+      "version": "8.21.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.21.0.tgz",
+      "integrity": "sha512-xcXBfcq0Kaxgj7dwejMbFyq7IOHgpNMtVuDveK7w3ZGwG9owKzhALVwKpTF2yrZmEwl9SWdetf3fxNzJQaVuxw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "@eslint-community/eslint-utils": "^4.4.0",
-        "@typescript-eslint/scope-manager": "8.19.0",
-        "@typescript-eslint/types": "8.19.0",
-        "@typescript-eslint/typescript-estree": "8.19.0"
+        "@typescript-eslint/scope-manager": "8.21.0",
+        "@typescript-eslint/types": "8.21.0",
+        "@typescript-eslint/typescript-estree": "8.21.0"
       },
       "engines": {
         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
@@ -7357,13 +7383,13 @@
       }
     },
     "node_modules/@typescript-eslint/type-utils/node_modules/@typescript-eslint/visitor-keys": {
-      "version": "8.19.0",
-      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-8.19.0.tgz",
-      "integrity": "sha512-mCFtBbFBJDCNCWUl5y6sZSCHXw1DEFEk3c/M3nRK2a4XUB8StGFtmcEMizdjKuBzB6e/smJAAWYug3VrdLMr1w==",
+      "version": "8.21.0",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-8.21.0.tgz",
+      "integrity": "sha512-BkLMNpdV6prozk8LlyK/SOoWLmUFi+ZD+pcqti9ILCbVvHGk1ui1g4jJOc2WDLaeExz2qWwojxlPce5PljcT3w==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@typescript-eslint/types": "8.19.0",
+        "@typescript-eslint/types": "8.21.0",
         "eslint-visitor-keys": "^4.2.0"
       },
       "engines": {
@@ -7413,6 +7439,19 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
+    "node_modules/@typescript-eslint/type-utils/node_modules/ts-api-utils": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.0.0.tgz",
+      "integrity": "sha512-xCt/TOAc+EOHS1XPnijD3/yzpH6qg2xppZO1YDqGoVsNXfQfzHpOdNuXwrwOU8u4ITXJyDCTyt8w5g1sZv9ynQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18.12"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4"
+      }
+    },
     "node_modules/@typescript-eslint/types": {
       "version": "7.18.0",
       "resolved": "https://registry.npmjs.org/@typescript-eslint/types/-/types-7.18.0.tgz",
diff --git a/extensions/ql-vscode/package.json b/extensions/ql-vscode/package.json
index b5c09cfae82..7d1555782be 100644
--- a/extensions/ql-vscode/package.json
+++ b/extensions/ql-vscode/package.json
@@ -2051,8 +2051,8 @@
     "@types/tmp": "^0.2.6",
     "@types/vscode": "1.90.0",
     "@types/yauzl": "^2.10.3",
-    "@typescript-eslint/eslint-plugin": "^8.19.0",
-    "@typescript-eslint/parser": "^8.19.0",
+    "@typescript-eslint/eslint-plugin": "^8.21.0",
+    "@typescript-eslint/parser": "^8.21.0",
     "@vscode/test-electron": "^2.3.9",
     "@vscode/vsce": "^3.2.1",
     "ansi-colors": "^4.1.1",