diff --git a/pyproject.toml b/pyproject.toml
index 99b8d21d8..6114cdf41 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ authors = [
 ]
 version = "0.1.30"
 readme = "README.md"
-requires-python = ">=3.11"
+requires-python = ">=3.11,<4.0"
 classifiers = [
     "Programming Language :: Python :: 3",
     "License :: OSI Approved :: MIT License",