diff --git a/README.rst b/README.rst
index e03fabb..6c2c6d9 100644
--- a/README.rst
+++ b/README.rst
@@ -380,6 +380,10 @@ For a ``SummingMergeTree`` you can optionally specify the summing columns::
     engine = engines.SummingMergeTree('EventDate', ('OrderID', 'EventDate', 'BannerID'),
                                       summing_cols=('Shows', 'Clicks', 'Cost'))
 
+For a ``ReplacingMergeTree`` you can optionally specify the version column::
+
+    engine = engines.ReplacingMergeTree('EventDate', ('OrderID', 'EventDate', 'BannerID'), ver_col='Version')
+
 A ``Buffer`` engine is available for BufferModels. (See below how to use BufferModel). You can specify following parameters::
 
     engine = engines.Buffer(Person) # you need to initialize engine with main Model. Other default parameters will be used