diff --git a/emacs/emacs.el b/emacs/emacs.el
index ef3c308..66cb3a5 100644
--- a/emacs/emacs.el
+++ b/emacs/emacs.el
@@ -177,6 +177,9 @@
 ;; set default web browser
 (setq browse-url-generic-program "x-www-browser")
 
+;; auto revert externally changed files
+(global-auto-revert-mode t)
+
 ;; set font
 (set-frame-font "Fira Mono 10" nil t)