diff --git a/certbot.spec b/certbot.spec
index 73a0e9b..9863c58 100644
--- a/certbot.spec
+++ b/certbot.spec
@@ -1,5 +1,5 @@
 Name:          certbot
-Version:       0.20.0
+Version:       0.21.0
 Release:       1mamba
 Summary:       A fully-featured, extensible client for the Let's Encrypt CA
 Group:         System/Libraries
@@ -79,6 +79,9 @@ _EOF
 #%{python_sitearch}/letsencrypt-%{version}-py*.egg-info/*
 
 %changelog
+* Thu Jan 18 2018 Automatic Build System <autodist@mambasoft.it> 0.21.0-1mamba
+- automatic version update by autodist
+
 * Wed Dec 20 2017 Automatic Build System <autodist@mambasoft.it> 0.20.0-1mamba
 - automatic version update by autodist