diff --git a/modelx/__init__.py b/modelx/__init__.py
index b3c2b51..786a9b6 100644
--- a/modelx/__init__.py
+++ b/modelx/__init__.py
@@ -20,7 +20,7 @@
 
 """
 
-VERSION = (0, 30, 1)
+VERSION = (0, 31, 0)
 __version__ = ".".join([str(x) for x in VERSION])
 from modelx.core.api import *  # must come after __version__ assignment.
 try: