diff --git a/tox.ini b/tox.ini
index fb8bef60..c600b4bc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,7 +20,7 @@ commands = flake8
 [flake8]
 ignore = H
 show-source = True
-exclude = .venv,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,tests,build
+exclude = .venv,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,tests,build,libra/*
 
 [testenv:cover]
 commands = python setup.py testr --coverage --testr-args='{posargs}'