diff --git a/lint-staged.config.js b/lint-staged.config.js
index 63f5258a940..4f9dd99ef66 100644
--- a/lint-staged.config.js
+++ b/lint-staged.config.js
@@ -5,6 +5,10 @@ const config = {
   '*.{css,scss}': 'stylelint --fix',
   '*.haml': 'bin/haml-lint -a',
   '**/*.ts?(x)': () => 'tsc -p tsconfig.json --noEmit',
+  'app/javascript/**/*.{js,jsx,ts,tsx}': () => [
+    `yarn i18n:extract`,
+    'git diff --exit-code app/javascript/mastodon/locales/en.json',
+  ],
 };
 
 module.exports = config;