diff --git a/.travis.yml b/.travis.yml
index 5fdfe4b..2b1ccc1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,7 +15,8 @@ matrix:
         - "3"
       before_install:
         - brew update
-        - brew install python3
+        - brew outdated python3 || brew install python3 || brew upgrade python3
+        - pip install -U virtualenv
         - virtualenv env -p python3
         - source env/bin/activate
 # command to install dependencies