diff --git a/tox.ini b/tox.ini
index 6e4f3d1..20b64f0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -30,5 +30,5 @@ commands =
 commands = {posargs}
 
 [flake8]
-exclude = .venv,.tox,dist,doc,*.egg
+exclude = .venv,.tox,dist,doc,*.egg,build
 show-source = true