diff --git a/src/ifcopenshell-python/pyproject.toml b/src/ifcopenshell-python/pyproject.toml
index fef5300a7f..816bb98817 100644
--- a/src/ifcopenshell-python/pyproject.toml
+++ b/src/ifcopenshell-python/pyproject.toml
@@ -9,7 +9,7 @@ authors = [
 ]
 description = "Python bindings, utility functions, and high-level API for IfcOpenShell"
 readme = "README.md"
-requires-python = ">=3.6,<3.12"
+requires-python = ">=3.9,<3.13"
 classifiers = [
     "Programming Language :: Python :: 3",
     "License :: OSI Approved :: GNU Lesser General Public License v3 or later (LGPLv3+)",