diff --git a/pyproject.toml b/pyproject.toml
index 95b61e2c39..febd543cf7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,8 @@ include = '''
     |nix/.*.pyi?$
 '''
 extend-exclude = '''
-    src/ifcopenshell-python/ifcopenshell/express/*
+    src/ifcopenshell-python/ifcopenshell/express/rules/*
+    |src/ifcopenshell-python/ifcopenshell/express/express_parser.py
     |src/ifcopenshell-python/ifcopenshell/mvd/*
     |src/ifcopenshell-python/ifcopenshell/simple_spf/*
     |src/ifc2ca/templates/*