.travis.yml: use older version of virtualenv

pypa/virtualenv#1857
terminusdb · Jun 12, 2020 · c9f9177 · c9f9177
1 parent fee82ac
commit c9f9177
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
 language: python
-install: make && pip install tox
+install: pip install virtualenv==20.0.21 && make && pip install tox
 script:
 - make ci
 cache: pip