diff --git a/packages/stream_chat/lib/src/db/chat_persistence_client.dart b/packages/stream_chat/lib/src/db/chat_persistence_client.dart
index 98f6a364..82ba181a 100644
--- a/packages/stream_chat/lib/src/db/chat_persistence_client.dart
+++ b/packages/stream_chat/lib/src/db/chat_persistence_client.dart
@@ -253,6 +253,7 @@ abstract class ChatPersistenceClient {
 
         users.addAll([
           channel.createdBy,
+          ...messages.map((it) => it.user),
           ...reads.map((it) => it.user),
           ...members.map((it) => it.user),
           ...reactions.map((it) => it.user),