diff --git a/clamd/Dockerfile b/clamd/Dockerfile
index a589e1f62efedfceabbcb4d32c395bcbbf0431ed..9a211456e31e4e18e81f774d17d0046aac53fab9 100644
--- a/clamd/Dockerfile
+++ b/clamd/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 # hadolint ignore=DL3008
 RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \