diff --git a/tox.ini b/tox.ini
index dcbbe340..386aea04 100644
--- a/tox.ini
+++ b/tox.ini
@@ -32,4 +32,4 @@ downloadcache = ~/cache/pip
 # H404  multi line docstring should start with a summary
 ignore = F403,F841,F812,F821,H302,H303,H306,H404
 show-source = True
-exclude = .venv,.tox,dist,doc,*egg
+exclude = .venv,.tox,dist,doc,*egg,build