diff --git a/ubuntu-docker-compose.yml b/ubuntu-docker-compose.yml
index 58524ed..8926b34 100644
--- a/ubuntu-docker-compose.yml
+++ b/ubuntu-docker-compose.yml
@@ -3,7 +3,7 @@ services:
 #########################
    podman-builder:
       hostname: podman-builder
-      image: ubuntu
+      image: ubuntu:focal
       working_dir: /root/
       volumes:
           - ./build:/root/build