diff --git a/Containerfile b/Containerfile
index 12df92a..c2cda15 100644
--- a/Containerfile
+++ b/Containerfile
@@ -1,4 +1,4 @@
-FROM docker.io/node:lts-bookworm-slim
+FROM docker.io/node:lts-bookworm-slim@sha256:ecc9a2581f8588014a49a523a9ed146d27963f6d988d11bd16bbdcb3598f5f98
 
 LABEL maintainer="Robert Kaussow <mail@thegeeklab.de>"
 LABEL org.opencontainers.image.authors="Robert Kaussow <mail@thegeeklab.de>"