diff --git a/pyproject.toml b/pyproject.toml
index 6e9c4517..60fa52ab 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,6 +10,7 @@ exclude = '''
     | \.git          # root of the project
     | \.hg
     | \.mypy_cache
+    | \.nox
     | \.tox
     | \.venv
     | _build