diff --git a/Dockerfile b/Dockerfile
index c4fe848..01eccd4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # ---- Stage 1: Fetch Mattermost + MostlyMatter ----
-    FROM debian:trixie-slim AS fetcher
+    FROM debian:bookworm-slim AS fetcher
 
     ARG MOSTLYMATTER_VERSION=v11.3.0
     ARG MATTERMOST_VERSION=11.3.0
@@ -25,7 +25,7 @@
 
 
     # ---- Stage 2: Runtime container ----
-    FROM debian:trixie-slim
+    FROM debian:bookworm-slim
 
     # Add runtime deps for Mattermost
     RUN apt-get update && apt-get install -y --no-install-recommends \