ci: fix Travis (#236) (#6786)

pytest-dev · Feb 21, 2020 · 58ef95e · 58ef95e
1 parent d1b5052
commit 58ef95e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -20,7 +20,7 @@ jobs:
     - env: TOXENV=py35 PYTEST_COVERAGE=1 PYTEST_ADDOPTS="-k test_raises_cyclic_reference"
       before_install:
         # Work around https://github.com/jaraco/zipp/issues/40.
-        - python -m pip install -U pip 'setuptools>=34.4.0' virtualenv
+        - python -m pip install -U 'setuptools>=34.4.0' virtualenv==16.7.9
 
 before_script:
   - |