diff --git a/Dockerfile b/Dockerfile
index 5b39267..34c1773 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:bullseye-slim@sha256:77f46c1cf862290e750e913defffb2828c889d291a93bdd10a7a0597720948fc AS snapcast_build
+FROM debian:bullseye-slim@sha256:77f46c1cf862290e750e913defffb2828c889d291a93bdd10a7a0597720948fc@sha256:77f46c1cf862290e750e913defffb2828c889d291a93bdd10a7a0597720948fc AS snapcast_build
 
 # renovate: datasource=github-tags depName=badaix/snapcast versioning=semver
 ENV SNAPCAST_VERSION v0.26.0