diff --git a/packages/shared/src/types.ts b/packages/shared/src/types.ts
index 07cbe091..6821fabc 100644
--- a/packages/shared/src/types.ts
+++ b/packages/shared/src/types.ts
@@ -298,6 +298,7 @@ export interface DmLastMessagePreview {
 
 export interface DmChannel {
   id: string;
+  federatedId?: string | null;
   ownerId?: string | null;
   createdAt: number;
   members: User[];
@@ -806,7 +807,8 @@ export interface FederationRelayEvent {
     | 'friend_add' | 'friend_remove' | 'file_rejected'
     | 'dm_call_start' | 'dm_call_accept' | 'dm_call_reject' | 'dm_call_end'
     | 'dm_typing_start' | 'dm_typing_stop'
-    | 'profile_update';
+    | 'profile_update'
+    | 'read_state_update';
   contextType?: 'dm' | 'friend' | 'profile';
   dmChannelId?: string;
   messageId: string;
@@ -843,6 +845,10 @@ export interface FederationRelayEvent {
     username: string;
   };
   profileUpdate?: FederationProfileUpdatePayload;
+  readState?: {
+    user: { homeUserId: string; homeInstance: string };
+    messageRef: { sourceInstance: string; sourceMessageId: string };
+  };
 }
 
 export interface FederationCallPayload {