diff --git a/eslint.config.js b/eslint.config.js
index bc6447f..48b1cbc 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -24,6 +24,7 @@ export default [
     // https://eslint.style/packages/js
     rules: {
       'no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
+      'prefer-const': 'error',
       '@stylistic/js/array-bracket-newline': ['error', 'consistent'],
       '@stylistic/js/array-bracket-spacing': 'error',
       '@stylistic/js/array-element-newline': ['error', 'consistent'],
diff --git a/src/util.js b/src/util.js
index f82102b..bda3f78 100644
--- a/src/util.js
+++ b/src/util.js
@@ -81,7 +81,7 @@ export const stealth = async context => {
     const evasion = await import(`puppeteer-extra-plugin-stealth/evasions/${e}/index.js`);
     evasion.default().onPageCreated(stealth);
   }
-  for (let evasion of stealth.callbacks) {
+  for (const evasion of stealth.callbacks) {
     await context.addInitScript(evasion.cb, evasion.a);
   }
 };