diff --git a/Dockerfile b/Dockerfile
index 4648dd2..d29f0ac 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -94,7 +94,7 @@ RUN set -ex ; \
   [ -f "/usr/local/etc/docker/env/default.sample" ] && [ -d "/etc/profile.d" ] && \
   cp -Rf "/usr/local/etc/docker/env/default.sample" "/etc/profile.d/container.env.sh" && chmod 755 "/etc/profile.d/container.env.sh" ; \
   BASH_CMD="$(type -P bash)" ; [ -f "$BASH_CMD" ] && rm -rf "/bin/sh" && ln -sf "$BASH_CMD" "/bin/sh" ; \
-  pip install certbot-dns-rfc2136
+  pip install --break-system-packages certbot-dns-rfc2136
 
 RUN set -ex ; \
   echo