diff --git a/dockerfiles/ubuntu/Dockerfile b/dockerfiles/ubuntu/Dockerfile
index 66310c8..538ffc1 100644
--- a/dockerfiles/ubuntu/Dockerfile
+++ b/dockerfiles/ubuntu/Dockerfile
@@ -1,4 +1,4 @@
-ARG base_image
+ARG base_image=ubuntu:latest
 ARG builder_image=concourse/golang-builder
 
 FROM ${builder_image} as builder