diff --git a/scripts/notify.sh b/scripts/notify.sh
index 21a3a46..5e73ef3 100755
--- a/scripts/notify.sh
+++ b/scripts/notify.sh
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 BODY="{'text':$1}"
 SIG=$(printf %s "$BODY" | openssl dgst -sha256 -hmac "a28b01dd9125753dc41945e4859b4e1007fa35305173451a" | awk '{print $2}')
 curl -s -X POST http://127.0.0.1:8644/webhooks/gitea-deploy -H "Content-Type: application/json" -H "X-Hub-Signature-256: sha256=$SIG" -d "$BODY"