diff --git a/tox.ini b/tox.ini
index cb735d28..b6be8ae7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,11 +18,12 @@ use_frozen_constraints = true
 deps =
     -r requirements/tests.txt
     min: -r requirements/tests-pallets-min.txt
-    dev: https://github.com/pallets/werkzeug/archive/refs/heads/main.tar.gz
-    dev: https://github.com/pallets/jinja/archive/refs/heads/main.tar.gz
-    dev: https://github.com/pallets/markupsafe/archive/refs/heads/main.tar.gz
-    dev: https://github.com/pallets/itsdangerous/archive/refs/heads/main.tar.gz
-    dev: https://github.com/pallets/click/archive/refs/heads/main.tar.gz
+    dev:
+        - https://github.com/pallets/werkzeug/archive/refs/heads/main.tar.gz
+        - https://github.com/pallets/jinja/archive/refs/heads/main.tar.gz
+        - https://github.com/pallets/markupsafe/archive/refs/heads/main.tar.gz
+        - https://github.com/pallets/itsdangerous/archive/refs/heads/main.tar.gz
+        - https://github.com/pallets/click/archive/refs/heads/main.tar.gz
 #    examples/tutorial[test]
 #    examples/javascript[test]
 # commands = pytest -v --tb=short --basetemp={envtmpdir} {posargs:tests examples}