diff --git a/xlsxdocument/__init__.py b/xlsxdocument/__init__.py
index 493ae75..30ead5b 100644
--- a/xlsxdocument/__init__.py
+++ b/xlsxdocument/__init__.py
@@ -1,4 +1,4 @@
-VERSION = (1, 3, 0)
+VERSION = (1, 3, 1)
 __version__ = '.'.join(map(str, VERSION))