diff --git a/tool.sh b/tool.sh
index a30b178..80f575d 100644
--- a/tool.sh
+++ b/tool.sh
@@ -1,3 +1,3 @@
-#!/bin/bash
+#!/bin/sh
 
 /usr/local/bin/tfci --organization="$PLUGIN_CLOUD_ORGANIZATION" --token="$PLUGIN_API_TOKEN" run $PLUGIN_ARGS