diff --git a/PanACoTA/__init__.py b/PanACoTA/__init__.py
index c3ea421dd6070e5a94a6a5d1eb23e413391c9f77..d951bb39c34a18ca2f53a00d06efa6f08a03c9a3 100755
--- a/PanACoTA/__init__.py
+++ b/PanACoTA/__init__.py
@@ -1,5 +1,5 @@
 """PanACoTA"""
 
-__version__ = "1.3.1dev"
+__version__ = "1.3.1-dev1"