diff --git a/fsl/version.py b/fsl/version.py
index 5078f11fae8655123c981a23615b0b47a641fd2f..34d5447e181f21be4dfed288ad18931acda71e1b 100644
--- a/fsl/version.py
+++ b/fsl/version.py
@@ -47,7 +47,7 @@ import            re
 import            string
 
 
-__version__ = '2.9.0.dev0'
+__version__ = '3.1.0.dev0'
 """Current version number, as a string. """