diff --git a/config/prod.exs b/config/prod.exs
index 58ec155ba..4b69d6a2a 100644
--- a/config/prod.exs
+++ b/config/prod.exs
@@ -11,7 +11,7 @@ use Mix.Config
 # before starting your production server.
 config :plausible, PlausibleWeb.Endpoint,
   http: [:inet6, port: System.get_env("PORT") || 4000],
-  url: [host: System.get_env("HOST"), scheme: "https"],
+  url: [host: System.get_env("HOST"), scheme: "https", port: 443],
   cache_static_manifest: "priv/static/cache_manifest.json"
 
 # Do not print debug messages in production