diff --git a/urlview.tmux b/urlview.tmux
index 88752ce..095bdda 100755
--- a/urlview.tmux
+++ b/urlview.tmux
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 get_tmux_option() {
   local option=$1