diff --git a/setup.cfg b/setup.cfg
index a246af5..eea6b51 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -23,6 +23,7 @@ classifier =
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
 
 [files]
 packages =
diff --git a/tox.ini b/tox.ini
index 7d12799..67c18d5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py38,pep8
+envlist = py39,pep8
 minversion = 2.0
 skipsdist = True