diff --git a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/cluster.health/20_request_timeout.yml b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/cluster.health/20_request_timeout.yml
index 74261d799ba7d..16d943332dc26 100644
--- a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/cluster.health/20_request_timeout.yml
+++ b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/cluster.health/20_request_timeout.yml
@@ -41,7 +41,10 @@
   - skip:
       version: " - 7.15.99"
       reason: "return_200_for_cluster_health_timeout was added in 7.16"
+      features: [ "allowed_warnings" ]
   - do:
+      allowed_warnings:
+        - 'the [return_200_for_cluster_health_timeout] parameter is deprecated and will be removed in a future release.'
       cluster.health:
         timeout: 1ms
         wait_for_active_shards: 5