diff --git a/README.md b/README.md
index 16308b6..3a2a4d6 100644
--- a/README.md
+++ b/README.md
@@ -335,8 +335,9 @@ until the lock expires. The default is currently 600 seconds but might change in
 buffer is included. During the last x seconds before the expiration of the lock the events are not considered for 
 transmission. The default is currently 60 seconds but might change in future releases.
 
-* **lock-size**: Defines the maximum amount of events which are loaded into memory and published in one run
-  (in one submission per event type). By default, all events are loaded into memory.
+* **lock-size**: Defines the maximum amount of events which are loaded into memory and published in one run 
+(in one submission per event type). By default, all events are loaded into memory. In future releases, this
+property will become mandatory.
 
 ```yaml
 nakadi-producer: