diff --git a/plugins/chat/assets/javascripts/discourse/components/chat-channel.js b/plugins/chat/assets/javascripts/discourse/components/chat-channel.js
index 63c0f19a634..f1b01248f12 100644
--- a/plugins/chat/assets/javascripts/discourse/components/chat-channel.js
+++ b/plugins/chat/assets/javascripts/discourse/components/chat-channel.js
@@ -560,7 +560,21 @@ export default class ChatLivePane extends Component {
         }
       }
 
-      this.args.channel.updateLastReadMessage(lastUnreadVisibleMessage.id);
+      if (!this.args.channel.isFollowing || !lastUnreadVisibleMessage.id) {
+        return;
+      }
+
+      if (
+        this.args.channel.currentUserMembership.lastReadMessageId >=
+        lastUnreadVisibleMessage.id
+      ) {
+        return;
+      }
+
+      return this.chatApi.markChannelAsRead(
+        this.args.channel.id,
+        lastUnreadVisibleMessage.id
+      );
     });
   }
 
diff --git a/plugins/chat/assets/javascripts/discourse/models/chat-channel.js b/plugins/chat/assets/javascripts/discourse/models/chat-channel.js
index df8db7fa335..0bd1d1f825f 100644
--- a/plugins/chat/assets/javascripts/discourse/models/chat-channel.js
+++ b/plugins/chat/assets/javascripts/discourse/models/chat-channel.js
@@ -1,6 +1,5 @@
 import UserChatChannelMembership from "discourse/plugins/chat/discourse/models/user-chat-channel-membership";
 import { TrackedSet } from "@ember-compat/tracked-built-ins";
-import { ajax } from "discourse/lib/ajax";
 import { escapeExpression } from "discourse/lib/utilities";
 import { tracked } from "@glimmer/tracking";
 import slugifyChannel from "discourse/plugins/chat/discourse/lib/slugify-channel";
@@ -325,22 +324,6 @@ export default class ChatChannel {
     this.currentUserMembership.muted = membership.muted;
   }
 
-  updateLastReadMessage(messageId) {
-    if (!this.isFollowing || !messageId) {
-      return;
-    }
-
-    if (this.currentUserMembership.lastReadMessageId >= messageId) {
-      return;
-    }
-
-    // TODO (martin) Change this to use chatApi service markChannelAsRead once we change this
-    // class not to use RestModel.
-    return ajax(`/chat/api/channels/${this.id}/read/${messageId}`, {
-      method: "PUT",
-    });
-  }
-
   clearSelectedMessages() {
     this.selectedMessages.forEach((message) => (message.selected = false));
   }