diff --git a/tox.ini b/tox.ini
index 4dce8900a..7c672851a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,6 +12,7 @@ commands =
     coverage run --branch --include "ironic_inspector_ramdisk*" -a -m unittest discover ironic_inspector_ramdisk.test
     coverage report -m --fail-under 90
 setenv = PYTHONDONTWRITEBYTECODE=1
+passenv = http_proxy HTTP_PROXY https_proxy HTTPS_PROXY no_proxy NO_PROXY
 
 [testenv:pep8]
 basepython = python2.7