diff --git a/openapi/CHANGELOG.md b/openapi/CHANGELOG.md
index 93a31acf..877c1f7c 100644
--- a/openapi/CHANGELOG.md
+++ b/openapi/CHANGELOG.md
@@ -6,6 +6,7 @@
 ### API: Refresh filters: POST /control/filtering/refresh
 
 * Added "whitelist" boolean parameter
+* Response is in JSON format
 
 Request:
 
@@ -15,6 +16,14 @@ Request:
 		"whitelist": true
 	}
 
+Response:
+
+	200 OK
+
+	{
+		"updated": 123 // number of filters updated
+	}
+
 
 ## v0.100: API changes