diff --git a/packages/stream_chat/CHANGELOG.md b/packages/stream_chat/CHANGELOG.md
index 6b7301fc..3d4dd563 100644
--- a/packages/stream_chat/CHANGELOG.md
+++ b/packages/stream_chat/CHANGELOG.md
@@ -3,6 +3,7 @@
 🐞 Fixed
 
 - Fixed streamWatchers. Before it was always new, now it is possible to follow the watchers of a channel.
+- Make `Message.i18n` field read-only.
 
 🔄 Changed
 
diff --git a/packages/stream_chat/test/src/core/api/message_api_test.dart b/packages/stream_chat/test/src/core/api/message_api_test.dart
index ed7fefd6..8ae82e94 100644
--- a/packages/stream_chat/test/src/core/api/message_api_test.dart
+++ b/packages/stream_chat/test/src/core/api/message_api_test.dart
@@ -394,7 +394,12 @@ void main() {
           path,
           data: {'language': language},
         )).thenAnswer((_) async => successResponse(path, data: {
-          'message': translatedMessage.toJson(),
+          'message': {
+            ...translatedMessage.toJson(),
+            'i18n': {
+              language: translatedMessageText,
+            },
+          },
         }));
 
     final res = await messageApi.translateMessage(messageId, language);