diff --git a/specification/validated-relationships-service-api.yaml b/specification/validated-relationships-service-api.yaml
index dc435ed8..d9ed2f5f 100644
--- a/specification/validated-relationships-service-api.yaml
+++ b/specification/validated-relationships-service-api.yaml
@@ -2704,6 +2704,7 @@ components:
                 - /extension/-
                 - /provision/period/end
                 - /provision/actor
+                - /policyRule
         value:
           oneOf:
             - type: string