diff --git a/tmux/tmux_attach.sh b/tmux/tmux_attach.sh
index 88a9a08..facfd0f 100755
--- a/tmux/tmux_attach.sh
+++ b/tmux/tmux_attach.sh
@@ -1,4 +1,4 @@
-#!/bin/zsh
+#!/bin/sh
 #
 # tmux-attach - attach to first unattached session or
 #         create new session if none are found