diff --git a/python-package/setup.py b/python-package/setup.py
index d6b310479..648c042b2 100644
--- a/python-package/setup.py
+++ b/python-package/setup.py
@@ -360,12 +360,11 @@ if __name__ == '__main__':
                        'Operating System :: OS Independent',
                        'Programming Language :: Python',
                        'Programming Language :: Python :: 3',
-                       'Programming Language :: Python :: 3.6',
                        'Programming Language :: Python :: 3.7',
                        'Programming Language :: Python :: 3.8',
                        'Programming Language :: Python :: 3.9',
                        'Programming Language :: Python :: 3.10'],
-          python_requires='>=3.6',
+          python_requires=">=3.7",
           url='https://github.com/dmlc/xgboost')
 
     clean_up()