diff --git a/tox.ini b/tox.ini
index bf1429098..13b67ad57 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,7 @@ envlist = py27, py35, docs, lint
 deps =
   -rrequirements.txt
   codecov>=2.0.5
-passenv = USERNAME HOME HOMEPATH LOCALAPPDATA CI TRAVIS TRAVIS_BUILD_ID TRAVIS_JOB_ID TRAVIS_BRANCH TRAVIS_JOB_NUMBER TRAVIS_PULL_REQUEST TRAVIS_REPO_SLUG TRAVIS_COMMIT
+passenv = USERNAME HOME HOMEPATH LOCALAPPDATA CODECOV_TOKEN CI TRAVIS TRAVIS_* APPVEYOR APPVEYOR_*
 setenv =
   PY3TESTS = test/netlib test/pathod/ test/mitmproxy/script test/mitmproxy/test_contentview.py test/mitmproxy/test_custom_contentview.py test/mitmproxy/test_app.py test/mitmproxy/test_controller.py test/mitmproxy/test_fuzzing.py test/mitmproxy/test_script.py test/mitmproxy/test_web_app.py test/mitmproxy/test_utils.py test/mitmproxy/test_stateobject.py test/mitmproxy/test_cmdline.py test/mitmproxy/test_contrib_tnetstring.py test/mitmproxy/test_proxy.py test/mitmproxy/test_protocol_http1.py test/mitmproxy/test_platform_pf.py