diff --git a/setup.py b/setup.py
index eed8907d..a8a307e8 100644
--- a/setup.py
+++ b/setup.py
@@ -57,5 +57,6 @@
             "breathe-apidoc = breathe.apidoc:main",
         ],
     },
+    python_requires='>=3.7',
     install_requires=requires,
 )