diff --git a/Dockerfile b/Dockerfile
index a9e3357..7f2153a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM gitea.fithwum.tech/fithwum/debian-base:bookworm
+FROM gitea.fithwum.tech/fithwum/debian-base:bullseye
 
 ARG VERSION
 ENV DEBIAN_FRONTEND=noninteractive