diff --git a/setup.cfg b/setup.cfg
index 0522d3b..479538e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -17,6 +17,7 @@ classifier =
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
 
 [files]
 packages =