Always use latest version of pytest and plugins.

andialbrecht · andialbrecht · commit 3b6096f04093 · 2019-01-07T10:53:51.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -10,7 +10,8 @@ python:
   - "pypy3"
 
 install:
-  - pip install pytest pytest-cov codecov
+  - pip install -Uq pytest pytest-cov codecov
+  - pytest --version
 
 script:
   - pytest --cov=sqlparse
