diff --git a/INSTALL b/INSTALL
index f9df19bfbd..75ade06f2f 100644
--- a/INSTALL
+++ b/INSTALL
@@ -4,7 +4,7 @@ Installing trytond_project_revenue
 Prerequisites
 -------------
 
- * Python 2.6 or later (http://www.python.org/)
+ * Python 2.7 or later (http://www.python.org/)
  * trytond (http://www.tryton.org/)
  * trytond_project (http://www.tryton.org/)
  * trytond_timesheet (http://www.tryton.org/)
diff --git a/setup.py b/setup.py
index 65568cf913..af138c774f 100644
--- a/setup.py
+++ b/setup.py
@@ -67,7 +67,6 @@ setup(name='trytond_project_revenue',
         'Natural Language :: Slovenian',
         'Natural Language :: Spanish',
         'Operating System :: OS Independent',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Topic :: Office/Business',
         ],