diff --git a/setup.py b/setup.py
index ff06b53..ba6e222 100644
--- a/setup.py
+++ b/setup.py
@@ -30,11 +30,12 @@ def read_requirements(path):
         'Topic :: Scientific/Engineering',
         'License :: OSI Approved :: Apache Software License',
         'Operating System :: OS Independent',
+        'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
     ],
-    python_requires=">=3.10",
+    python_requires=">=3.9",
     url='https://github.com/BirchKwok/MinVectorDB',
     author='Birch Kwok',
     author_email='birchkwok@gmail.com',