diff --git a/mmv1/products/cloudrunv2/Service.yaml b/mmv1/products/cloudrunv2/Service.yaml
index db919ee81e51..337e63381f52 100644
--- a/mmv1/products/cloudrunv2/Service.yaml
+++ b/mmv1/products/cloudrunv2/Service.yaml
@@ -690,6 +690,7 @@ properties:
                   description: |-
                     The Cloud SQL instance connection names, as can be found in https://console.cloud.google.com/sql/instances. Visit https://cloud.google.com/sql/docs/mysql/connect-run for more information on how to connect Cloud SQL and Cloud Run. Format: {project}:{location}:{instance}
                   item_type: Api::Type::String
+                  is_set: true
             - !ruby/object:Api::Type::NestedObject
               name: 'emptyDir'
               description: |-