diff --git a/hooks/build b/hooks/build
index a43d367..5470092 100644
--- a/hooks/build
+++ b/hooks/build
@@ -1,2 +1,2 @@
-#!/bin/sh
+#!/bin/bash
 docker build --build-arg BUILD_DATE=$(date -u +%Y-%m-%dT%H:%M:%SZ) -t $IMAGE_NAME .