diff --git a/fsl/version.py b/fsl/version.py
index bded2ff8a3cf6a9ef4c12d1871d1e40f2b1b812d..520dc6191809b5bf4f618a4cb41b79d43f1f958a 100644
--- a/fsl/version.py
+++ b/fsl/version.py
@@ -47,7 +47,7 @@ import            re
 import            string
 
 
-__version__ = '2.2.0.dev0'
+__version__ = '2.3.0.dev0'
 """Current version number, as a string. """