diff --git a/core-services/sanitize-prow-jobs/_clusters.yaml b/core-services/sanitize-prow-jobs/_clusters.yaml
index e4d45b020681e..6b8ca4af23759 100644
--- a/core-services/sanitize-prow-jobs/_clusters.yaml
+++ b/core-services/sanitize-prow-jobs/_clusters.yaml
@@ -93,7 +93,7 @@ gcp:
     - gcp
     - kvm
   - name: build13
-    blocked: false
+    blocked: true
     capabilities:
     - gcp
     - kvm