diff --git a/Dockerfile b/Dockerfile
index 1ceec151b836a8e681702d4d236d8b5b8f94e693..3a13ae6efbdbe5daf68d3487bdf711e52f9745ea 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM registry.git.autistici.org/pipelines/images/base/debian:master
+FROM registry.git.autistici.org/pipelines/images/base/debian:bookworm
 
 RUN apt-get -q update && \
     env DEBIAN_FRONTEND=noninteractive apt-get -y install prometheus && \