diff --git a/tox.ini b/tox.ini
index 1dbe7025a4..a11e506585 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,7 +20,8 @@ envlist =
     {pypy,py2.7}-django-1.7
     {pypy,py2.7}-django-1.6
 
-    {pypy,py2.7,py3.5,py3.6,py3.7,py3.8}-flask-{1.1,1.0,0.11,0.12,dev}
+    {pypy,py2.7,py3.5,py3.6,py3.7,py3.8}-flask-{1.1,1.0,0.11,0.12}
+    {py3.6,py3.7,py3.8}-flask-{1.1,1.0,0.11,0.12,dev}
 
     {pypy,py2.7,py3.5,py3.6,py3.7,py3.8}-bottle-0.12