diff --git a/eslint.config.js b/eslint.config.js
index b92b41aa4161..14d17e283ee0 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -85,6 +85,7 @@ module.exports = [
             'no-case-declarations': 'off',
             'prefer-const': 'warn',
             'prefer-spread': 'warn',
+            'no-var': 'error',
             'sort-imports': [
                 'error',
                 {