diff --git a/config/config.exs b/config/config.exs
index 6fc127d4c..e180cc302 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -26,6 +26,7 @@
   metadata: [:request_id]
 
 config :mime, :types, %{
+  "application/xml" => ["xml"],
   "application/xrd+xml" => ["xrd+xml"],
   "application/activity+json" => ["activity+json"],
   "application/ld+json" => ["activity+json"]