diff --git a/lib/plausible_web/plugs/last_seen_plug.ex b/lib/plausible_web/plugs/last_seen_plug.ex
index 5a935d62f0..556f021899 100644
--- a/lib/plausible_web/plugs/last_seen_plug.ex
+++ b/lib/plausible_web/plugs/last_seen_plug.ex
@@ -1,4 +1,6 @@
 defmodule PlausibleWeb.LastSeenPlug do
+  @moduledoc false
+
   import Plug.Conn
   use Plausible.Repo