diff --git a/requirements-extra.txt b/requirements-extra.txt
index ed294462..44c47a4c 100644
--- a/requirements-extra.txt
+++ b/requirements-extra.txt
@@ -1,4 +1,4 @@
 pytest>=2.0.0,<3.0
 pytest-monkeyplus>=1.0.0
 flake8
-
+tox-travis