diff --git a/tools/server-setup.d/40-docker.sh b/tools/server-setup.d/40-docker.sh
index d78bb7c..7c33143 100755
--- a/tools/server-setup.d/40-docker.sh
+++ b/tools/server-setup.d/40-docker.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 if ! docker network inspect proxy &> /dev/null; then
     echo "creating proxy network..."