diff --git a/Dockerfile b/Dockerfile
index 53cf30e..7bc5f51 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM httpd:alpine
+FROM httpd:bullseye
 
 # These variables are inherited from the httpd:alpine image:
 # ENV HTTPD_PREFIX /usr/local/apache2
@@ -50,7 +50,7 @@ RUN chmod +x /docker-entrypoint.sh; \
     ln -s ../conf-available/dav.conf "conf/conf-enabled"; \
     ln -s ../sites-available/default.conf "conf/sites-enabled"; \
     # Install openssl if we need to generate a self-signed certificate.
-    apk add --no-cache openssl
+    apt update -y && apt upgrade -y && apt install openssl apr-util-bdb -y
 
 EXPOSE 80/tcp 443/tcp
 ENTRYPOINT [ "/docker-entrypoint.sh" ]