diff --git a/setup.cfg b/setup.cfg
index 70537b38..6971ab13 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -21,6 +21,7 @@ classifier=
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: Implementation :: CPython
 
diff --git a/tox.ini b/tox.ini
index daf306d1..ce19c03e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py38,pep8,cover
+envlist = py39,pep8,cover
 minversion = 2.5
 skipsdist = True