diff --git a/oh-my-zsh.sh b/oh-my-zsh.sh
index eadf02d..d31e059 100644
--- a/oh-my-zsh.sh
+++ b/oh-my-zsh.sh
@@ -15,5 +15,5 @@ if [ "$DISABLE_AUTO_UPDATE" = "true" ]
 then
   return
 else
-  /bin/sh $ZSH/tools/check_for_upgrade.sh
+  /bin/zsh $ZSH/tools/check_for_upgrade.sh
 fi