diff --git a/obd/__version__.py b/obd/__version__.py
index aed0de48..652a8f47 100644
--- a/obd/__version__.py
+++ b/obd/__version__.py
@@ -1,2 +1,2 @@
 
-__version__ = '0.3.0'
+__version__ = '0.4.0'
diff --git a/setup.py b/setup.py
index 4245a1bf..a43a4f5c 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name="obd",
-    version="0.3.0",
+    version="0.4.0",
     description=("Serial module for handling live sensor data from a vehicle's OBD-II port"),
     classifiers=[
         "Operating System :: POSIX :: Linux",