diff --git a/deploy/truenas_ws.sh b/deploy/truenas_ws.sh
index 3ee983a3..7292987b 100644
--- a/deploy/truenas_ws.sh
+++ b/deploy/truenas_ws.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 # TrueNAS deploy script for SCALE/CORE using websocket
 # It is recommend to use a wildcard certificate