diff --git a/asprin/__init__.py b/asprin/__init__.py
index 092fc9a..4f13271 100644
--- a/asprin/__init__.py
+++ b/asprin/__init__.py
@@ -26,5 +26,5 @@
 __author__ = 'Javier Romero'
 __email__ = 'javier@cs.uni-potsdam.de'
 __license__ = 'MIT'
-__version__ = '3.1.0'
+__version__ = '3.1.1'
 __url__ = 'https://github.com/potassco/asprin'