diff --git a/tox.ini b/tox.ini
index 48792b86..e8e8bdb2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,13 +13,13 @@
 # limitations under the License.
 
 [tox]
-envlist = py27,py37
+envlist = py27,py37,py38
 
 [testenv]
 passenv = *
 usedevelop = True
 deps =
-    py36,py37: black
+    py36,py3,py38: black
     isort
     pylint
     pytest