diff --git a/YD_AllHeartRates.Api/appsettings.json b/YD_AllHeartRates.Api/appsettings.json
index b13899c..e292196 100644
--- a/YD_AllHeartRates.Api/appsettings.json
+++ b/YD_AllHeartRates.Api/appsettings.json
@@ -43,7 +43,7 @@
     "Host": "8.153.108.90",
     "Port": 1883,
     "Topic": "heartrates/topic",
-    "BatchSize": 10
+    "BatchSize": 1
 
   }
 }