diff --git a/tox.ini b/tox.ini
index 24d8e1558..190865f23 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,7 +22,7 @@ setenv =
 deps =
         django22: Django>=2.2,<3.0
         django30: Django>=3.0,<3.1
-        django31: Django>=3.0a1,<3.2
+        django31: Django>=3.1a1,<3.2
         djangomaster: https://github.com/django/django/archive/master.tar.gz
         -rrequirements/requirements-testing.txt
         -rrequirements/requirements-optionals.txt