diff --git a/.travis.yml b/.travis.yml
index 38eb982a..07a4f1d7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -49,7 +49,6 @@ before_install:
       rm -rf "$(dirs -l +0)" &&
       popd
     fi
-  - ${PIP} install --upgrade six
 
 install:
   - ${PIP} install --upgrade --editable .[test,md5,bcrypt]