diff --git a/write_google_creds.sh b/write_google_creds.sh
index 661105d2..6f6f53d4 100755
--- a/write_google_creds.sh
+++ b/write_google_creds.sh
@@ -1 +1,2 @@
-echo ${GOOGLE_APPLICATION_CREDENTIALS_B64} | base64 -d > gc_credential.json
\ No newline at end of file
+#!/bin/bash
+echo ${GOOGLE_APPLICATION_CREDENTIALS_B64} | base64 -d > gc_credential.json