diff --git a/build/ci/powerdns/Containerfile b/build/ci/powerdns/Containerfile
index 47de059a..8b80f7fa 100644
--- a/build/ci/powerdns/Containerfile
+++ b/build/ci/powerdns/Containerfile
@@ -1,4 +1,4 @@
-FROM debian:bullseye
+FROM debian:bookworm
 
 ENV DEB_VERSION buster
 ENV PDNS_MINOR_VERSION 42