diff --git a/tox.ini b/tox.ini
index b172232..bf364a8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,6 +10,7 @@ setenv =
   LANGUAGE=en_US
   LC_ALL=en_US.utf-8
   PIPENV_VERBOSITY=-1
+  PIPENV_IGNORE_PIPFILE=1
 deps =
   pipenv
 passenv = http_proxy https_proxy HTTP_PROXY HTTPS_PROXY no_proxy NO_PROXY PBR_VERSION