diff --git a/setup.cfg b/setup.cfg
index 0be5170..1dee18a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,9 +16,8 @@ classifier =
     Programming Language :: Python :: Implementation :: CPython
     Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
-    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 aa347f1..4c23b5e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.18.0
-envlist = py36,py35,pypy,pep8
+envlist = py39,pypy,pep8
 skipsdist = True
 ignore_basepython_conflict = True