diff --git a/setup.cfg b/setup.cfg
index e70ce71..7807c00 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -17,6 +17,8 @@ classifier =
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9