diff --git a/tox.ini b/tox.ini
index fab40b41eb..b310844cbd 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,6 +14,7 @@ deps = -r{toxinidir}/requirements.txt
 whitelist_externals = bash
 commands =
   bash -c "TESTS_DIR=./ironic/tests/ python setup.py testr --slowest --testr-args='{posargs}'"
+passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 
 [tox:jenkins]
 downloadcache = ~/cache/pip