diff --git a/.eslintrc.js b/.eslintrc.js
index 191e3f6..7882a39 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -31,6 +31,7 @@ module.exports = {
       { exceptions: ['i', 'j', 't', 'Q', 'A', 'C', 'q', 'a', 'b', 'x'] },
     ],
     'object-shorthand': ['warn', 'never'],
+    'prefer-const': 'warn',
   },
   root: true,
 }