diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 5075a3e..c67c22a 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,2 +1,2 @@
 [bumpversion]
-current_version = 3.3.0
+current_version = 3.3.1
diff --git a/sii/__init__.py b/sii/__init__.py
index 8efa185..5533fb2 100644
--- a/sii/__init__.py
+++ b/sii/__init__.py
@@ -1,4 +1,4 @@
 # -*- coding: utf-8 -*-
 
-__LIBRARY_VERSION__ = '3.3.0'
+__LIBRARY_VERSION__ = '3.3.1'
 __SII_VERSION__ = '1.1'