diff --git a/test.Dockerfile b/test.Dockerfile
index 9ee14137b..470ea79e9 100644
--- a/test.Dockerfile
+++ b/test.Dockerfile
@@ -1 +1 @@
-FROM buildpack-deps:bookworm
+FROM buildpack-deps:bookworm@sha256:0835951ee403724c852836426d78431ffadf2a4942560613575f304307d61412