diff --git a/tox.ini b/tox.ini
index 95b1780..c49851b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,7 +12,7 @@ pip_pre=True
 deps =
     django31: Django >= 3.1, <3.2
     django32: Django >= 3.2
-    djangotip: https://github.com/django/django/archive/master.tar.gz
+    djangotip: https://github.com/django/django/archive/refs/heads/main.tar.gz
 
 commands =
     ./runtests