diff --git a/src/chilife/__init__.py b/src/chilife/__init__.py
index ad31214..8b20706 100644
--- a/src/chilife/__init__.py
+++ b/src/chilife/__init__.py
@@ -26,4 +26,4 @@
 # SpinLabel = SpinLabel.SpinLabel
 # dSpinLabel = dSpinLabel.dSpinLabel
 
-__version__ = '0.4.0'
+__version__ = '0.5.0'