diff --git a/mmv1/products/apigee/api.yaml b/mmv1/products/apigee/api.yaml
index 6c3e66c6d077..28438dc46927 100644
--- a/mmv1/products/apigee/api.yaml
+++ b/mmv1/products/apigee/api.yaml
@@ -177,6 +177,7 @@ objects:
         values:
           - "SLASH_16"
           - "SLASH_20"
+          - "SLASH_23"
       - !ruby/object:Api::Type::String
         name: 'description'
         description: |