diff --git a/pifacecommon/version.py b/pifacecommon/version.py
index ea5d65f..0d6a4f2 100644
--- a/pifacecommon/version.py
+++ b/pifacecommon/version.py
@@ -1 +1 @@
-__version__ = '4.2.0'
+__version__ = '4.2.1'