diff --git a/tox.ini b/tox.ini
index 6c86be990..0f3c63d93 100644
--- a/tox.ini
+++ b/tox.ini
@@ -53,3 +53,11 @@ import_exceptions =
   oslo_messaging.openstack.common._i18n
   oslo_messaging._i18n
   six.moves
+
+[testenv:pip-missing-reqs]
+# do not install test-requirements as that will pollute the virtualenv for
+# determining missing packages
+# this also means that pip-missing-reqs must be installed separately, outside
+# of the requirements.txt files
+deps = pip_missing_reqs
+commands = pip-missing-reqs -d --ignore-module=oslo_messaging* --ignore-file=oslo_messaging/tests/* --ignore-file=tests/ oslo_messaging