diff --git a/Dockerfile-dev b/Dockerfile-dev
index 86847f8fd..2d961a6f2 100644
--- a/Dockerfile-dev
+++ b/Dockerfile-dev
@@ -1,5 +1,5 @@
 # This Dockerfile builds an image for development.
-FROM debian:buster
+FROM ubuntu:focal
 
 # Note: this only exposes the port to other docker containers.
 EXPOSE 80 443