diff --git a/README_development.rst b/README_development.rst
index 86bfb81..995cfd8 100644
--- a/README_development.rst
+++ b/README_development.rst
@@ -21,6 +21,11 @@ Setup test requirements
     java -jar jython-installer-2.7.0.jar && rm jython-installer-2.7.0.jar
     # add jython to your path
 
+    # Install Python 2.6
+    sudo add-apt-repository ppa:fkrull/deadsnakes
+    sudo apt-get update
+    sudo apt-get install python2.6 python2.6-dev
+
     # run tests for all supported envs
     tox