diff --git a/.ko.yaml b/.ko.yaml
index 275f7632220b..f9079ac25e40 100644
--- a/.ko.yaml
+++ b/.ko.yaml
@@ -1,3 +1,4 @@
 # Use :nonroot base image for all containers
+defaultBaseImage: ghcr.io/wolfi-dev/static:alpine
 baseImageOverrides:
-  knative.dev/serving/vendor/github.com/tsenart/vegeta/v12: ubuntu:latest
+  github.com/tsenart/vegeta/v12: ubuntu:latest