diff --git a/docker/admin/Dockerfile b/docker/admin/Dockerfile
index ea76193..1981d6d 100644
--- a/docker/admin/Dockerfile
+++ b/docker/admin/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:rolling
+FROM ubuntu:21.04
 
 COPY docker/admin/install.bash /tmp/
 RUN /tmp/install.bash