diff --git a/Dockerfile b/Dockerfile
index 4594a8f..10072fe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ RUN set -ex; \
     curl -o /home/curl_user/determine-docker-tags.py \
     https://git.walbeck.it/walbeck-it/determine-docker-tags/raw/tag/${DETERMINE_DOCKER_TAGS_VERSION}/determine_docker_tags/__init__.py;
 
-FROM gcr.io/distroless/python3-debian12
+FROM gcr.io/distroless/python3-debian12@sha256:078ef2498f450dddbabf7c46f889016824c8c032f84edd2017cd135a2b4bae91
 
 COPY --from=download /home/curl_user/determine-docker-tags.py /