diff --git a/setup.cfg b/setup.cfg
index de8a0f49..f0d1e41e 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 ec4aa4fa..1e3b7bef 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = pypy,py38,pep8
+envlist = pypy,py39,pep8
 ignore_basepython_conflict = true
 minversion = 3.1.0
 skipsdist = True