diff --git a/src/jobs/publish-and-rollout-image.yml b/src/jobs/publish-and-rollout-image.yml
index 5bcdc83..3fde55f 100644
--- a/src/jobs/publish-and-rollout-image.yml
+++ b/src/jobs/publish-and-rollout-image.yml
@@ -1,5 +1,6 @@
 description: "Update cluster with new Docker image."
-machine: true
+machine: 
+  image: ubuntu-1604:202004-01
 parameters:
   cluster:
     description: "The Kubernetes cluster name."