diff --git a/Dockerfile-dev b/Dockerfile-dev
index 1ab56e081..86f5f04e7 100644
--- a/Dockerfile-dev
+++ b/Dockerfile-dev
@@ -1,5 +1,5 @@
 # This Dockerfile builds an image for development.
-FROM ubuntu:xenial
+FROM debian:buster
 
 # Note: this only exposes the port to other docker containers.
 EXPOSE 80 443