diff --git a/ema_workbench/__init__.py b/ema_workbench/__init__.py
index f8bb57d0c..1ba50888e 100644
--- a/ema_workbench/__init__.py
+++ b/ema_workbench/__init__.py
@@ -33,4 +33,4 @@
 
 # from . import analysis
 
-__version__ = "2.5.0"
+__version__ = "2.5.1-dev"