diff --git a/test.Dockerfile b/test.Dockerfile
index 18676fb9b..5e9f385a0 100644
--- a/test.Dockerfile
+++ b/test.Dockerfile
@@ -1 +1 @@
-FROM gcr.io/distroless/nodejs22-debian12
+FROM gcr.io/distroless/nodejs22-debian12@sha256:c218f62198d07fc67e36fff5639985f29b1bdcf04a601c1d23c0ab1121f55f0b