Tests(tox): Limit `VIRTUALENV_PIP` version for Python 3.4

diff --git a/tox.ini b/tox.ini
index 230ab1b9e9b91ef1a7530c98aa818c78fa4bc428..0f8e7cd3190028ab02bd46576140b1b30ec0e916 100644 (file)
--- a/tox.ini
+++ b/tox.ini
@@ -18,6 +18,8 @@ commands =
 deps =
     -rdevscripts/requirements/requirements_tests.txt
 passenv = CI TRAVIS TRAVIS_* APPVEYOR DISTUTILS_USE_SDK MSSdk INCLUDE LIB WINDIR
+setenv =
+    VIRTUALENV_PIP = 19.1.1
 platform = linux
 
 [testenv:{py27,py34,py35,py36,py37,py38,py39}-sqlite]