diff --git a/common/src/interfaces/conversation-message.ts b/common/src/interfaces/conversation-message.ts
new file mode 100644
index 0000000..e921a28
--- /dev/null
+++ b/common/src/interfaces/conversation-message.ts
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2022 Savoir-faire Linux Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this program.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+import { Message } from '../Conversation.js';
+
+export interface ConversationMessage {
+  conversationId: string;
+  message: Message;
+}