diff --git a/.travis.yml b/.travis.yml
index 58845f1..f16271a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ python:
   - 3.5
 
 install:
-  - pip install -e .[test]
+  - pip install --upgrade -e .[test]
 
 script:
   - python setup.py test