diff --git a/src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.pyi b/src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.pyi
index 29c14d7e7a..ee727a8c91 100644
--- a/src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.pyi
+++ b/src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.pyi
@@ -1797,7 +1797,7 @@ def kind_to_string(k): ...
 def less(arg1, arg2): ...
 def line_segments_to_polygons(s, eps, segments): ...
 def map_shape(settings, instance): ...
-def logger_or_root(logger) -> logger: ...
+def logger_or_root(logger: logger | None) -> logger: ...
 def nary_union(sequence): ...
 def new_IfcBaseClass(schema_identifier: str, name: str) -> entity_instance: ...
 def open(fn: str, readonly: bool = False, logger=None) -> file: ...