diff --git a/app/assets/javascripts/discourse/app/components/user-menu/reviewables-list.js b/app/assets/javascripts/discourse/app/components/user-menu/reviewables-list.js
index d8155ef6c88..e75efd52b69 100644
--- a/app/assets/javascripts/discourse/app/components/user-menu/reviewables-list.js
+++ b/app/assets/javascripts/discourse/app/components/user-menu/reviewables-list.js
@@ -25,6 +25,8 @@ export default class UserMenuReviewablesList extends UserMenuItemsList {
 
   fetchItems() {
     return ajax("/review/user-menu-list").then((data) => {
+      this.currentUser.updateReviewableCount(data.reviewable_count);
+
       return data.reviewables.map((item) => {
         return new UserMenuReviewableItem({
           reviewable: UserMenuReviewable.create(item),
diff --git a/app/assets/javascripts/discourse/tests/acceptance/user-menu-test.js b/app/assets/javascripts/discourse/tests/acceptance/user-menu-test.js
index 34177d934d6..6b7bd1df9ca 100644
--- a/app/assets/javascripts/discourse/tests/acceptance/user-menu-test.js
+++ b/app/assets/javascripts/discourse/tests/acceptance/user-menu-test.js
@@ -120,9 +120,19 @@ acceptance("User menu", function (needs) {
 
   test("clicking on user menu items", async function (assert) {
     updateCurrentUser({ reviewable_count: 1 });
+
     await visit("/");
     await click(".d-header-icons .current-user");
     await click("#user-menu-button-review-queue");
+
+    assert.strictEqual(
+      query(
+        "#user-menu-button-review-queue .badge-notification"
+      ).textContent.trim(),
+      "8",
+      "updates user's reviewable count based on request's response"
+    );
+
     await click("#quick-access-review-queue li.reviewable.pending a");
 
     assert.strictEqual(
diff --git a/app/assets/javascripts/discourse/tests/helpers/review-pretender.js b/app/assets/javascripts/discourse/tests/helpers/review-pretender.js
index b864494a75c..e1952574eab 100644
--- a/app/assets/javascripts/discourse/tests/helpers/review-pretender.js
+++ b/app/assets/javascripts/discourse/tests/helpers/review-pretender.js
@@ -214,6 +214,7 @@ export default function (helpers) {
           is_new_topic: false,
         },
       ],
+      reviewable_count: 8,
       __rest_serializer: "1",
     });
   });
diff --git a/app/controllers/reviewables_controller.rb b/app/controllers/reviewables_controller.rb
index 61af8f0e3ec..68a218100b0 100644
--- a/app/controllers/reviewables_controller.rb
+++ b/app/controllers/reviewables_controller.rb
@@ -81,6 +81,7 @@ class ReviewablesController < ApplicationController
           Reviewable.user_menu_list_for(current_user),
           current_user,
         ).as_json,
+      reviewable_count: current_user.reviewable_count,
     }
     render_json_dump(json, rest_serializer: true)
   end
diff --git a/spec/requests/reviewables_controller_spec.rb b/spec/requests/reviewables_controller_spec.rb
index 286b86ec398..f0cbcc6400d 100644
--- a/spec/requests/reviewables_controller_spec.rb
+++ b/spec/requests/reviewables_controller_spec.rb
@@ -300,6 +300,16 @@ RSpec.describe ReviewablesController do
         expect(reviewables[0]["pending"]).to eq(true)
       end
 
+      it "responds with current user's reviewables count" do
+        reviewable = Fabricate(:reviewable)
+
+        get "/review/user-menu-list.json"
+
+        expect(response.status).to eq(200)
+        expect(response.parsed_body["reviewables"].length).to eq(1)
+        expect(response.parsed_body["reviewable_count"]).to eq(1)
+      end
+
       it "responds with pending reviewables only" do
         Fabricate(:reviewable, status: Reviewable.statuses[:approved])
         pending1 = Fabricate(:reviewable, status: Reviewable.statuses[:pending])