diff --git a/halfapi/__init__.py b/halfapi/__init__.py
index c532caf..3fa9e9e 100644
--- a/halfapi/__init__.py
+++ b/halfapi/__init__.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-__version__ = '0.6.19'
+__version__ = '0.6.20-rc0'
 
 def version():
     return f'HalfAPI version:{__version__}'