From 0f4722a251cf1fe10c406c874a2f26782dcc0c0b Mon Sep 17 00:00:00 2001
From: Philipp Hossner <philipp.hosner@posteo.de>
Date: Thu, 30 Aug 2018 02:36:29 +0200
Subject: [PATCH] Fix travis-ci issue with python 3.3

---
 .travis.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 6c6b30a2..5549ae03 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,8 @@ python:
   - 3.5
   - 3.6
 install:
+  # python 3.3 compatibility
+  - if [[ $TRAVIS_PYTHON_VERSION == 2.6 ]]; then pip install virtualenv==15.1.0; fi
   - pip install tox-travis
   - pip install coveralls
 script: