Ensure virtualenv is upgraded when installing tox. Fixes jaraco/path#188

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jaraco · May 22, 2020 · 70c5062 · 70c5062
1 parent 8de68ba
commit 70c5062
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -8,7 +8,8 @@ python:
 cache: pip
 
 install:
-- pip install tox
+# ensure virtualenv is upgraded to avoid issues like jaraco/path#188
+- pip install -U --upgrade-strategy=eager tox
 
 before_script:
   # Enable IPv6. Ref travis-ci/travis-ci#8361