diff --git a/lib/microwaveprop/application.ex b/lib/microwaveprop/application.ex
index 22ce4dc5..06a241bd 100644
--- a/lib/microwaveprop/application.ex
+++ b/lib/microwaveprop/application.ex
@@ -127,7 +127,8 @@ defmodule Microwaveprop.Application do
         # Erlang's node() name in non-K8s environments.
         node_name = System.get_env("POD_IP") || to_string(node())
 
-        {Phoenix.PubSub, name: Microwaveprop.PubSub, adapter: Phoenix.PubSub.Redis, url: url, node_name: node_name}
+        {Phoenix.PubSub,
+         name: Microwaveprop.PubSub, adapter: Phoenix.PubSub.Redis, redis_opts: [url: url], node_name: node_name}
     end
   end