diff --git a/discord/http.py b/discord/http.py
index d1556e303..9459a9c55 100644
--- a/discord/http.py
+++ b/discord/http.py
@@ -241,6 +241,8 @@ class HTTPClient:
                             raise Forbidden(r, data)
                         elif r.status == 404:
                             raise NotFound(r, data)
+                        elif r.status == 503:
+                            raise DiscordServerError(r, data)
                         else:
                             raise HTTPException(r, data)