diff --git a/luxtronik/parameters.py b/luxtronik/parameters.py
index 34e24e3..a8bc8d5 100755
--- a/luxtronik/parameters.py
+++ b/luxtronik/parameters.py
@@ -2,6 +2,7 @@
 import logging
 
 from luxtronik.datatypes import (
+    Kelvin,
     Celsius,
     CoolingMode,
     HeatingMode,
diff --git a/setup.py b/setup.py
index c168491..ef6dec8 100755
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="luxtronik",
-    version="0.3.8",
+    version="0.3.9",
     author="Bouni",
     author_email="bouni@owee.de",
     description="A luxtronik heatpump controller interface",