diff --git a/CHANGES.rst b/CHANGES.rst
index 284440b..54d2289 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,11 @@
 Changelog
 =========
 
+0.13.1 (2017-04-11)
+-------------------
+
+- Fix error when repository has no updated_at value. [Nicolai Ehemann]
+
 0.13.0 (2017-04-05)
 -------------------
 
diff --git a/github_backup/__init__.py b/github_backup/__init__.py
index 2d7893e..deea98b 100644
--- a/github_backup/__init__.py
+++ b/github_backup/__init__.py
@@ -1 +1 @@
-__version__ = '0.13.0'
+__version__ = '0.13.1'