diff --git a/src/Discord/Parts/User/User.php b/src/Discord/Parts/User/User.php
index ede24fc90..c06103e0a 100644
--- a/src/Discord/Parts/User/User.php
+++ b/src/Discord/Parts/User/User.php
@@ -70,6 +70,7 @@ class User extends Part implements Stringable
     public const FLAG_VERIFIED_BOT_DEVELOPER = (1 << 17);
     public const FLAG_DISCORD_CERTIFIED_MODERATOR = (1 << 18);
     public const BOT_HTTP_INTERACTIONS = (1 << 19);
+    public const FLAG_SUSPECTED_SPAM = (1 << 20); // Not documented
     public const FLAG_ACTIVE_DEVELOPER = (1 << 22);
 
     public const PREMIUM_NONE = 0;