Fix bogus bash binary location
diff --git a/themes/zitron/zitron.theme.bash b/themes/zitron/zitron.theme.bash
index 3ec4d97..7737d07 100644
--- a/themes/zitron/zitron.theme.bash
+++ b/themes/zitron/zitron.theme.bash
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # zitron theme by Florian Baumann <flo@noqqe.de>
 
 ## git-theme