diff --git a/app/javascript/mastodon/actions/notification_policies.ts b/app/javascript/mastodon/actions/notification_policies.ts
index fcc9919c49..b182bcf699 100644
--- a/app/javascript/mastodon/actions/notification_policies.ts
+++ b/app/javascript/mastodon/actions/notification_policies.ts
@@ -1,3 +1,5 @@
+import { createAction } from '@reduxjs/toolkit';
+
 import {
   apiGetNotificationPolicy,
   apiUpdateNotificationsPolicy,
@@ -14,3 +16,7 @@ export const updateNotificationsPolicy = createDataLoadingThunk(
   'notificationPolicy/update',
   (policy: Partial<NotificationPolicy>) => apiUpdateNotificationsPolicy(policy),
 );
+
+export const decreasePendingNotificationsCount = createAction<number>(
+  'notificationPolicy/decreasePendingNotificationCount',
+);
diff --git a/app/javascript/mastodon/actions/notifications.js b/app/javascript/mastodon/actions/notifications.js
index 7e4320c27b..48afb003ad 100644
--- a/app/javascript/mastodon/actions/notifications.js
+++ b/app/javascript/mastodon/actions/notifications.js
@@ -18,6 +18,7 @@ import {
   importFetchedStatuses,
 } from './importer';
 import { submitMarkers } from './markers';
+import { decreasePendingNotificationsCount } from './notification_policies';
 import { notificationsUpdate } from "./notifications_typed";
 import { register as registerPushNotifications } from './push_notifications';
 import { saveSettings } from './settings';
@@ -84,6 +85,12 @@ const fetchRelatedRelationships = (dispatch, notifications) => {
   }
 };
 
+const selectNotificationCountForRequest = (state, id) => {
+  const requests = state.getIn(['notificationRequests', 'items']);
+  const thisRequest = requests.find(request => request.get('id') === id);
+  return thisRequest ? thisRequest.get('notifications_count') : 0;
+};
+
 export const loadPending = () => ({
   type: NOTIFICATIONS_LOAD_PENDING,
 });
@@ -433,11 +440,13 @@ export const fetchNotificationRequestFail = (id, error) => ({
   error,
 });
 
-export const acceptNotificationRequest = id => (dispatch) => {
+export const acceptNotificationRequest = (id) => (dispatch, getState) => {
+  const count = selectNotificationCountForRequest(getState(), id);
   dispatch(acceptNotificationRequestRequest(id));
 
   api().post(`/api/v1/notifications/requests/${id}/accept`).then(() => {
     dispatch(acceptNotificationRequestSuccess(id));
+    dispatch(decreasePendingNotificationsCount(count));
   }).catch(err => {
     dispatch(acceptNotificationRequestFail(id, err));
   });
@@ -459,11 +468,13 @@ export const acceptNotificationRequestFail = (id, error) => ({
   error,
 });
 
-export const dismissNotificationRequest = id => (dispatch) => {
+export const dismissNotificationRequest = (id) => (dispatch, getState) => {
+  const count = selectNotificationCountForRequest(getState(), id);
   dispatch(dismissNotificationRequestRequest(id));
 
   api().post(`/api/v1/notifications/requests/${id}/dismiss`).then(() =>{
     dispatch(dismissNotificationRequestSuccess(id));
+    dispatch(decreasePendingNotificationsCount(count));
   }).catch(err => {
     dispatch(dismissNotificationRequestFail(id, err));
   });
diff --git a/app/javascript/mastodon/reducers/notification_policy.ts b/app/javascript/mastodon/reducers/notification_policy.ts
index ab111066cc..ed912dde5d 100644
--- a/app/javascript/mastodon/reducers/notification_policy.ts
+++ b/app/javascript/mastodon/reducers/notification_policy.ts
@@ -2,17 +2,25 @@ import { createReducer, isAnyOf } from '@reduxjs/toolkit';
 
 import {
   fetchNotificationPolicy,
+  decreasePendingNotificationsCount,
   updateNotificationsPolicy,
 } from 'mastodon/actions/notification_policies';
 import type { NotificationPolicy } from 'mastodon/models/notification_policy';
 
 export const notificationPolicyReducer =
   createReducer<NotificationPolicy | null>(null, (builder) => {
-    builder.addMatcher(
-      isAnyOf(
-        fetchNotificationPolicy.fulfilled,
-        updateNotificationsPolicy.fulfilled,
-      ),
-      (_state, action) => action.payload,
-    );
+    builder
+      .addCase(decreasePendingNotificationsCount, (state, action) => {
+        if (state) {
+          state.summary.pending_notifications_count -= action.payload;
+          state.summary.pending_requests_count -= 1;
+        }
+      })
+      .addMatcher(
+        isAnyOf(
+          fetchNotificationPolicy.fulfilled,
+          updateNotificationsPolicy.fulfilled,
+        ),
+        (_state, action) => action.payload,
+      );
   });