diff --git a/docker/proxy/Dockerfile b/docker/proxy/Dockerfile
index ffd68cbf..b00f372d 100644
--- a/docker/proxy/Dockerfile
+++ b/docker/proxy/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:focal as production
+FROM ubuntu:20.04 as production
 
 ENV DEBIAN_FRONTEND noninteractive