diff --git a/tox.ini b/tox.ini
index 4ad535d..e56279b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,8 @@ envlist =
     py27-django{111},
     py35-django{111,20,30,tip},
     py36-django{111,20,30,tip},
-    py37-django{111,20,30,tip},
+    py37-django{111,20,21,22,30,tip},
+    py38-django{111,20,21,22,30,tip}
     migrationscheck
 
 [testenv]
@@ -12,8 +13,10 @@ pip_pre=True
 deps =
     django111: Django >=1.11, <2.0
     django20: Django >= 2.0, <2.1
+    django21: Django >= 2.3, <2.2
+    django22: Django >= 2.2, <2.3
     django30: Django >= 3.0, <3.1
-    djangotip: Django
+    djangotip: https://github.com/django/django/archive/master.tar.gz
     
 commands = 
     ./runtests