diff --git a/pyproject.toml b/pyproject.toml
index 766d8751..53d72326 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,7 +62,7 @@ classifiers = [
     "Programming Language :: Python :: 3",
     "Operating System :: OS Independent",
 ]
-requires-python = ">= 3.9"
+requires-python = ">= 3.9, < 3.12"
 
 [build-system]
 requires = ["hatchling"]