diff --git a/ChangeLog.md b/ChangeLog.md
index 48fed1911..3eb58d325 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -24,7 +24,7 @@ General:
 - Bumped `@types/args` dev dependency from 5.0.3 to 5.0.4 (patch update).
 - Bumped `@types/mime` dev dependency from `1.3.5` to `4.0.0`. `@types/mime` v4 is a stub package; removed `mime` from the explicit `types` list in `tsconfig.json` to avoid a missing type-definition error.
 - Bumped `typescript` dev dependency from 5.9.3 to 7.0.2 for the main build, while keeping a TypeScript 6.0.3 install (pinned exactly, aliased as the `typescript` package) for `@typescript-eslint`, which only supports TypeScript `>=4.8.4 <6.1.0`. Updated `tsconfig.json` to remove compiler options removed in TypeScript 7 (`moduleResolution: "node"`, `downlevelIteration`) and to explicitly list all `@types` packages (e.g. mocha, node) under `types`, since TypeScript 7 no longer auto-includes `@types/*` packages when the option is omitted.
-- Bumped `eslint` dev dependency from 8.57.1 to 10.8.1 and migrated ESLint configuration from legacy `.eslintrc.js` to the flat config format (`eslint.config.js`) required by ESLint v9+. Added `@eslint/js` and `globals` as dev dependencies to support the flat config.
+- Bumped `eslint` dev dependency from 8.57.1 to 10.9.0 and migrated ESLint configuration from legacy `.eslintrc.js` to the flat config format (`eslint.config.js`) required by ESLint v9+. Added `@eslint/js` and `globals` as dev dependencies to support the flat config.
 - Bumped `applicationinsights` from 3.15.1 to 3.16.0 to address CVE-2026-54285.
 - Bumped `@types/vscode` dev dependency from 1.103.0 to 1.125.0.
 - Bumped `tedious` from 18.6.2 to 20.0.0.
diff --git a/package-lock.json b/package-lock.json
index 6148cc780..d15a2adb1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6416,9 +6416,9 @@
       }
     },
     "node_modules/eslint": {
-      "version": "10.8.1",
-      "resolved": "https://registry.npmjs.org/eslint/-/eslint-10.8.1.tgz",
-      "integrity": "sha512-wqA7W2jbsC/BnV9Iv1UZpKVFkO1AdNoSmYW8NWG4HNOBbkAMvIqDZ27pI2f07dqn583NcIC44ckjAcOXDL1QbQ==",
+      "version": "10.9.0",
+      "resolved": "https://registry.npmjs.org/eslint/-/eslint-10.9.0.tgz",
+      "integrity": "sha512-5KeEOJZBfEVA47boFiBsf+6MmmJpffM7qEBg4pLla2e4nlKgdKlqCW0oSLOGsT8Wl5uCGJptLV1bkaiShj90Gw==",
       "dev": true,
       "license": "MIT",
       "workspaces": [