diff --git a/.travis.yml b/.travis.yml
index a4aa8c7..0bfeae6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ matrix:
         python: 3.6
     -   env: TOXENV=pypy
 #install: pip install coveralls tox
+install: pip install tox
 script: tox
 before_install:
   # Install git-lfs for a test