From 926d152d3b5b4df37a92cb7ffb6919152e3662fd Mon Sep 17 00:00:00 2001
From: Roman Mogylatov <rmogilatov@gmail.com>
Date: Fri, 22 Jun 2018 10:18:33 +0300
Subject: [PATCH] Fix incompatibility issue between pip10 and virtualenv16
 (travis)

---
 .travis.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 9e9c826f..42d594fc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,8 @@
 sudo: false
 install: 
     - pip install tox
-script: 
+    - if [[ $TRAVIS_PYTHON_VERSION == 3.3 ]]; then pip install virtualenv==15.2.0; fi
+script:
     - tox
 language:
     - python