diff --git a/keps/sig-api-machinery/2887-openapi-enum-types/README.md b/keps/sig-api-machinery/2887-openapi-enum-types/README.md
index d785a60dbdf..25003c9c5b1 100644
--- a/keps/sig-api-machinery/2887-openapi-enum-types/README.md
+++ b/keps/sig-api-machinery/2887-openapi-enum-types/README.md
@@ -484,7 +484,9 @@ there should be integration and e2e tests that validate present of enum fields.
 
 #### Stable
 
- - OpenAPI-level validation of enum types in built-in types removed in favor of that provided by the schema. 
+ - Built-in types that are tagged with enum are validated by Declarative Validation
+   (see [KEP-4153](https://kep.k8s.io/4153))
+ - Verify that this feature does not cause known breakage related to Declarative Validation.
 
 ### Upgrade / Downgrade Strategy
 Enable/disable the OpenAPIEnum feature gate.
@@ -855,4 +857,4 @@ information to express the idea and why it was not acceptable.
 This change can go along with OpenAPI v3 instead of v2, which prevent the breakage mentioned above.
 However, an affected client can release a new major version to introduce the breaking change itself
 instead of waiting for new major version of OpenAPI. In this way, we can "make things right" and benefit
-from the improvement much earlier.
\ No newline at end of file
+from the improvement much earlier.