diff --git a/setup.cfg b/setup.cfg
index 27535e56d..707aafed9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -45,7 +45,7 @@ install_requires =
     platformdirs>=2,<3
     importlib-metadata>=0.12;python_version<"3.8"
     importlib-resources>=1.0;python_version<"3.7"
-python_requires = >=3.6
+python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*
 package_dir =
     =src
 zip_safe = True