diff --git a/pyproject.toml b/pyproject.toml
index 2a5a016..5285a5a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,7 +62,7 @@ strict_optional = true
 ignore_missing_imports = true
 explicit_package_bases = true
 
-exclude = []
+exclude = ["nanobind_test"]
 
 [tool.ruff]
 exclude = [