diff --git a/tox.ini b/tox.ini
index 9fd1b6d..7335ca1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.7.2
-envlist = flake8, py3flake8, py35, py36, py37, py38, py39, pypy, pypy3
+envlist = flake8, py3flake8, python3.5, python3.6, python3.7, python3.8, python3.8, pypy, pypy3
 skip_missing_interpreters = true
 
 [testenv]
@@ -9,7 +9,7 @@ deps =
     requests
     pytest
     pytest-cov
-passenv = CI TRAVIS TRAVIS_*
+passenv = CI,TRAVIS,TRAVIS_*
 commands = pytest --cov-report term-missing --cov logzio tests -v
 
 [testenv:flake8]