diff --git a/pyproject.toml b/pyproject.toml
index 7790b68..037194e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ authors = [
 ]
 description = "A python CAD programming library"
 readme = "README.md"
-requires-python = ">=3.9"
+requires-python = ">= 3.9, < 3.13"
 keywords = [
     "3d models",
     "3d printing",