diff --git a/app/src/main/java/com/nextcloud/talk/chat/data/model/ChatMessage.kt b/app/src/main/java/com/nextcloud/talk/chat/data/model/ChatMessage.kt
index 1e228ba5b..2c3bf7dad 100644
--- a/app/src/main/java/com/nextcloud/talk/chat/data/model/ChatMessage.kt
+++ b/app/src/main/java/com/nextcloud/talk/chat/data/model/ChatMessage.kt
@@ -407,7 +407,9 @@ data class ChatMessage(
         BREAKOUT_ROOMS_STARTED,
         BREAKOUT_ROOMS_STOPPED,
         AVATAR_SET,
-        AVATAR_REMOVED
+        AVATAR_REMOVED,
+        FEDERATED_USER_ADDED,
+        FEDERATED_USER_REMOVED
     }
 
     companion object {
diff --git a/app/src/main/java/com/nextcloud/talk/models/json/converters/EnumSystemMessageTypeConverter.kt b/app/src/main/java/com/nextcloud/talk/models/json/converters/EnumSystemMessageTypeConverter.kt
index 6cc84fe2b..962c7adda 100644
--- a/app/src/main/java/com/nextcloud/talk/models/json/converters/EnumSystemMessageTypeConverter.kt
+++ b/app/src/main/java/com/nextcloud/talk/models/json/converters/EnumSystemMessageTypeConverter.kt
@@ -31,6 +31,8 @@ import com.nextcloud.talk.chat.data.model.ChatMessage.SystemMessageType.CONVERSA
 import com.nextcloud.talk.chat.data.model.ChatMessage.SystemMessageType.DESCRIPTION_REMOVED
 import com.nextcloud.talk.chat.data.model.ChatMessage.SystemMessageType.DESCRIPTION_SET
 import com.nextcloud.talk.chat.data.model.ChatMessage.SystemMessageType.DUMMY
+import com.nextcloud.talk.chat.data.model.ChatMessage.SystemMessageType.FEDERATED_USER_ADDED
+import com.nextcloud.talk.chat.data.model.ChatMessage.SystemMessageType.FEDERATED_USER_REMOVED
 import com.nextcloud.talk.chat.data.model.ChatMessage.SystemMessageType.FILE_SHARED
 import com.nextcloud.talk.chat.data.model.ChatMessage.SystemMessageType.GROUP_ADDED
 import com.nextcloud.talk.chat.data.model.ChatMessage.SystemMessageType.GROUP_REMOVED
@@ -136,6 +138,8 @@ class EnumSystemMessageTypeConverter : StringBasedTypeConverter<ChatMessage.Syst
             "breakout_rooms_stopped" -> BREAKOUT_ROOMS_STOPPED
             "avatar_set" -> AVATAR_SET
             "avatar_removed" -> AVATAR_REMOVED
+            "federated_user_added" -> FEDERATED_USER_ADDED
+            "federated_user_removed" -> FEDERATED_USER_REMOVED
             else -> DUMMY
         }
     }
@@ -203,6 +207,8 @@ class EnumSystemMessageTypeConverter : StringBasedTypeConverter<ChatMessage.Syst
             BREAKOUT_ROOMS_STOPPED -> "breakout_rooms_stopped"
             AVATAR_SET -> "avatar_set"
             AVATAR_REMOVED -> "avatar_removed"
+            FEDERATED_USER_ADDED -> "federated_user_added"
+            FEDERATED_USER_REMOVED -> "federated_user_removed"
             else -> ""
         }
     }