diff --git a/ci/prow-entrypoint.sh b/ci/prow-entrypoint.sh
index 5b291be86..d23d2da01 100755
--- a/ci/prow-entrypoint.sh
+++ b/ci/prow-entrypoint.sh
@@ -111,6 +111,7 @@ kola_test_metal() {
 
 # Ensure that we can create all platform images for COSA CI
 cosa_buildextend_all() {
+    cosa build
     cosa buildextend-aliyun
     cosa buildextend-aws
     cosa buildextend-azure