diff --git a/src/ifcopenshell-python/ifcopenshell/geom/main.py b/src/ifcopenshell-python/ifcopenshell/geom/main.py
index e045305390..21707d173e 100644
--- a/src/ifcopenshell-python/ifcopenshell/geom/main.py
+++ b/src/ifcopenshell-python/ifcopenshell/geom/main.py
@@ -100,6 +100,7 @@ SETTING = Literal[
     "piecewise-step-type",
     "piecewise-step-param",
     "use-python-opencascade",
+    "no-parallel-mapping"
 ]
 SERIALIZER_SETTING = Literal[
     "use-element-names",