diff --git a/emacs/.emacs.d/Cask b/emacs/.emacs.d/Cask
index 235df90..40347ea 100644
--- a/emacs/.emacs.d/Cask
+++ b/emacs/.emacs.d/Cask
@@ -60,6 +60,7 @@
 (depends-on "jabber")
 (depends-on "jedi")
 (depends-on "js2-mode")
+(depends-on "lua-mode")
 (depends-on "magit")
 (depends-on "markdown-mode")
 (depends-on "mode-icons")