diff --git a/es-index-template.sh b/es-index-template.sh
index 9611cd2..feb646c 100644
--- a/es-index-template.sh
+++ b/es-index-template.sh
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 curl -XPUT "${ES_HOST:-localhost}:${ES_PORT:-9200}/_template/statsd-template" -d '
 {
     "template" : "statsd-*",