diff --git a/get-images-from-files/test.Dockerfile b/get-images-from-files/test.Dockerfile
index 9ce0c9b..1292b88 100644
--- a/get-images-from-files/test.Dockerfile
+++ b/get-images-from-files/test.Dockerfile
@@ -10,4 +10,4 @@ FROM example.com/library/base@sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 ## Short repo:tag (ignored by design; only registry refs are extracted)
 FROM nginx:3.19
 ## With digest only but no registry (ignored)
-FROM nginx@sha256:1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef
+FROM nginx@sha256:1854da86e82d5dfb49a8f3d78b099adcc7e36608b207146ed95cd47937938a40