diff --git a/emacs.d/init.el b/emacs.d/init.el
index 3503943..4f24c70 100644
--- a/emacs.d/init.el
+++ b/emacs.d/init.el
@@ -342,6 +342,8 @@
 (setq css-indent-offset 2)
 (setq js-indent-level 2)
 
+(add-to-list 'auto-mode-alist '("\\.mjs\\'" . js-mode))
+
 (use-package js2-mode
   :config
   (add-to-list 'interpreter-mode-alist '("#!/usr/bin/env node" . js2-mode))