diff --git a/.travis.yml b/.travis.yml
index 33e85b25..cd0525d0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -56,7 +56,7 @@ install:
                   brew upgrade "$BREW_PYTHON_PACKAGE"
               fi
           fi
-          sudo pip2 install tox
+          pip3 install tox
       fi
 script:
     - |