diff --git a/README.rst b/README.rst
index eed7802..f550688 100644
--- a/README.rst
+++ b/README.rst
@@ -14,7 +14,7 @@ also includes a serial client to directly read and parse smart meter data.
 Features
 --------
 
-DSMR Parser supports DSMR versions 2, 3, 4 and 5. It has been tested with Python 3.5.
+DSMR Parser supports DSMR versions 2, 3, 4 and 5. It has been tested with Python 3.4 and 3.5.
 
 
 Examples
diff --git a/tox.ini b/tox.ini
index 1402405..75afbbe 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py34,py35
+envlist = py34,py35,py36
 
 [testenv]
 deps=