diff --git a/tox.ini b/tox.ini
index 0d33126e..48cf989a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,14 +1,13 @@
 [tox]
-minversion = 3.1.0
 envlist = py37,pep8
 ignore_basepython_conflict = true
+minversion = 3.2.0
 skipsdist = True
 
 [testenv]
 basepython = python3
 usedevelop = True
 setenv =
-   VIRTUAL_ENV={envdir}
    PYTHONWARNINGS=default::DeprecationWarning
 passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 deps =