diff --git a/src/ifcopenshell-python/ifcopenshell/simple_spf b/src/ifcopenshell-python/ifcopenshell/simple_spf
index 2849a31788..9400d243d8 160000
--- a/src/ifcopenshell-python/ifcopenshell/simple_spf
+++ b/src/ifcopenshell-python/ifcopenshell/simple_spf
@@ -1 +1 @@
-Subproject commit 2849a31788c4f82edca7d1b1046d0606fdf8b9be
+Subproject commit 9400d243d880dace57490949d74ab1932ce99a09