diff --git a/README.md b/README.md
index 44d0375..67e9bd1 100755
--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@ noiseprotocol
 This repository contains source code of **noiseprotocol** - a Python 3 implementation of [Noise Protocol Framework](http://www.noiseprotocol.org/).
 Compatible with revisions 32 and 33.
 
+Master branch contains latest version released. Trunk branch is an active development branch.
+
 ### Warning
 This package shall not be used (yet) for production purposes. There was little to none peer review done so far. 
 Use common sense while using - until this package becomes stable.