diff --git a/packages/openapi-types/index.ts b/packages/openapi-types/index.ts
index e777005b..0635a2f8 100644
--- a/packages/openapi-types/index.ts
+++ b/packages/openapi-types/index.ts
@@ -403,7 +403,7 @@ export namespace OpenAPIV3 {
     type?: NonArraySchemaObjectType;
   }
 
-  export interface BaseSchemaObject {
+  export interface BaseSchemaObject extends Partial<ReferenceObject> {
     // JSON schema allowed properties, adjusted for OpenAPI
     title?: string;
     description?: string;