Upgrade pip, will it help ?

rohe · rohe · commit 89838a0dc2a4 · 2021-03-23T11:02:15.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -12,6 +12,7 @@ addons:
       - rustc
       - cargo
 install:
+- pip install --upgrade pip
 - pip install codecov
 - pip install isort
 - pip install tox
