diff --git a/test.Dockerfile b/test.Dockerfile
index 5aaf0a281..e1bf3da85 100644
--- a/test.Dockerfile
+++ b/test.Dockerfile
@@ -1 +1 @@
-FROM hello-world
+FROM hello-world@sha256:53cc4d415d839c98be39331c948609b659ed725170ad2ca8eb36951288f81b75