diff --git a/certbot.spec b/certbot.spec
index 4f59f96..a0b3199 100644
--- a/certbot.spec
+++ b/certbot.spec
@@ -1,6 +1,6 @@
 Name:          certbot
 Version:       0.13.0
-Release:       1mamba
+Release:       2mamba
 Summary:       A fully-featured, extensible client for the Let's Encrypt CA
 Group:         System/Libraries
 Vendor:        openmamba
@@ -34,6 +34,7 @@ Requires:      python-psutil
 Requires:      python-configobj
 Requires:      python-setuptools
 Requires:      python-funcsigs >= 1.0
+Requires:      python-argparse
 Provides:      letsencrypt
 Obsoletes:     letsencrypt
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
@@ -78,6 +79,9 @@ _EOF
 #%{python_sitearch}/letsencrypt-%{version}-py*.egg-info/*
 
 %changelog
+* Thu Apr 13 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 0.13.0-2mamba
+- require python-argparse
+
 * Fri Apr 07 2017 Automatic Build System <autodist@mambasoft.it> 0.13.0-1mamba
 - automatic version update by autodist