diff --git a/setup.py b/setup.py
index 04297d14..0ecfd589 100644
--- a/setup.py
+++ b/setup.py
@@ -168,7 +168,7 @@ def build_extension(self, ext):
     cmdclass={"build_ext": CMakeBuild},
     zip_safe=False,
     test_suite="tests.python",
-    python_requires=">=3.6",
+    python_requires=">=3.9",
     setup_requires=[
         "setuptools",
         "wheel",