diff --git a/setup.cfg b/setup.cfg
index b62ca424b5..54bb94e76e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -148,6 +148,9 @@ omit =
 [entry_points]
 
 [options]
+
+python_requires = >=3.7
+
 install_requires=
    numpy>=1.16
    astropy>=4.0