diff --git a/Dockerfile.mono b/Dockerfile.mono
index 2fc244b..1aa8458 100644
--- a/Dockerfile.mono
+++ b/Dockerfile.mono
@@ -1,4 +1,5 @@
-FROM bitnami/minideb:bookworm
+FROM mono:slim
+
 USER root
 ENV DEBIAN_FRONTEND=noninteractive