MNT: pip install --upgrade requirements on Travis

kernc · kernc · commit a6d7cbece77d · 2020-07-02T14:11:59.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -39,7 +39,7 @@ before_install:
   - set -e
 
 install:
-  - pip install --pre .[test]
+  - pip install -U --pre .[test]
 
 script:
   - BOKEH_BROWSER=none time catchsegv python setup.py test
