diff --git a/build/ci/powerdns/Containerfile b/build/ci/powerdns/Containerfile
index f35911fd..47de059a 100644
--- a/build/ci/powerdns/Containerfile
+++ b/build/ci/powerdns/Containerfile
@@ -1,4 +1,4 @@
-FROM debian:buster
+FROM debian:bullseye
 
 ENV DEB_VERSION buster
 ENV PDNS_MINOR_VERSION 42