diff --git a/templates/cluster-template-aws.yaml b/templates/cluster-template-aws.yaml
index 96a68d3..f00facf 100644
--- a/templates/cluster-template-aws.yaml
+++ b/templates/cluster-template-aws.yaml
@@ -20,6 +20,7 @@ metadata:
   name: ${CLUSTER_NAME}
 spec:
   region: ${AWS_REGION}
+  imageLookupBaseOS: ubuntu-20.04
   sshKeyName: ${AWS_SSH_KEY_NAME}
   bastion:
     enabled: ${AWS_CREATE_BASTION:=false}