diff --git a/app/javascript/mastodon/features/status/components/card.jsx b/app/javascript/mastodon/features/status/components/card.jsx
index ee1fbe0f8f..136a5568a4 100644
--- a/app/javascript/mastodon/features/status/components/card.jsx
+++ b/app/javascript/mastodon/features/status/components/card.jsx
@@ -8,7 +8,7 @@ import { FormattedMessage } from 'react-intl';
 import classNames from 'classnames';
 
 
-import Immutable from 'immutable';
+import { is } from 'immutable';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 
 import DescriptionIcon from '@/material-icons/400-24px/description-fill.svg?react';
@@ -73,7 +73,7 @@ export default class Card extends PureComponent {
   };
 
   UNSAFE_componentWillReceiveProps (nextProps) {
-    if (!Immutable.is(this.props.card, nextProps.card)) {
+    if (!is(this.props.card, nextProps.card)) {
       this.setState({ embedded: false, previewLoaded: false });
     }
 
diff --git a/app/javascript/mastodon/features/status/index.jsx b/app/javascript/mastodon/features/status/index.jsx
index c115f77755..8da3d7e11a 100644
--- a/app/javascript/mastodon/features/status/index.jsx
+++ b/app/javascript/mastodon/features/status/index.jsx
@@ -7,7 +7,7 @@ import { Helmet } from 'react-helmet';
 import { withRouter } from 'react-router-dom';
 
 import { createSelector } from '@reduxjs/toolkit';
-import Immutable from 'immutable';
+import { List as ImmutableList } from 'immutable';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import { connect } from 'react-redux';
@@ -87,7 +87,7 @@ const makeMapStateToProps = () => {
     (_, { id }) => id,
     state => state.getIn(['contexts', 'inReplyTos']),
   ], (statusId, inReplyTos) => {
-    let ancestorsIds = Immutable.List();
+    let ancestorsIds = ImmutableList();
     ancestorsIds = ancestorsIds.withMutations(mutable => {
       let id = statusId;
 
@@ -134,14 +134,14 @@ const makeMapStateToProps = () => {
       });
     }
 
-    return Immutable.List(descendantsIds);
+    return ImmutableList(descendantsIds);
   });
 
   const mapStateToProps = (state, props) => {
     const status = getStatus(state, { id: props.params.statusId });
 
-    let ancestorsIds   = Immutable.List();
-    let descendantsIds = Immutable.List();
+    let ancestorsIds   = ImmutableList();
+    let descendantsIds = ImmutableList();
 
     if (status) {
       ancestorsIds   = getAncestorsIds(state, { id: status.get('in_reply_to_id') });
diff --git a/app/javascript/mastodon/features/subscribed_languages_modal/index.jsx b/app/javascript/mastodon/features/subscribed_languages_modal/index.jsx
index 0531346f91..895a2686e8 100644
--- a/app/javascript/mastodon/features/subscribed_languages_modal/index.jsx
+++ b/app/javascript/mastodon/features/subscribed_languages_modal/index.jsx
@@ -23,7 +23,7 @@ const getAccountLanguages = createSelector([
   (state, accountId) => state.getIn(['timelines', `account:${accountId}`, 'items'], ImmutableList()),
   state => state.get('statuses'),
 ], (statusIds, statuses) =>
-  new ImmutableSet(statusIds.map(statusId => statuses.get(statusId)).filter(status => !status.get('reblog')).map(status => status.get('language'))));
+  ImmutableSet(statusIds.map(statusId => statuses.get(statusId)).filter(status => !status.get('reblog')).map(status => status.get('language'))));
 
 const mapStateToProps = (state, { accountId }) => ({
   acct: state.getIn(['accounts', accountId, 'acct']),
diff --git a/app/javascript/mastodon/models/account.ts b/app/javascript/mastodon/models/account.ts
index 8e8e3b0e8d..34fd1b57e9 100644
--- a/app/javascript/mastodon/models/account.ts
+++ b/app/javascript/mastodon/models/account.ts
@@ -1,5 +1,5 @@
 import type { RecordOf } from 'immutable';
-import { List, Record as ImmutableRecord } from 'immutable';
+import { List as ImmutableList, Record as ImmutableRecord } from 'immutable';
 
 import escapeTextContentForBrowser from 'escape-html';
 
@@ -48,9 +48,9 @@ export interface AccountShape
   extends Required<
     Omit<ApiAccountJSON, 'emojis' | 'fields' | 'roles' | 'moved'>
   > {
-  emojis: List<CustomEmoji>;
-  fields: List<AccountField>;
-  roles: List<AccountRole>;
+  emojis: ImmutableList<CustomEmoji>;
+  fields: ImmutableList<AccountField>;
+  roles: ImmutableList<AccountRole>;
   display_name_html: string;
   note_emojified: string;
   note_plain: string | null;
@@ -70,8 +70,8 @@ export const accountDefaultValues: AccountShape = {
   indexable: false,
   display_name: '',
   display_name_html: '',
-  emojis: List<CustomEmoji>(),
-  fields: List<AccountField>(),
+  emojis: ImmutableList<CustomEmoji>(),
+  fields: ImmutableList<AccountField>(),
   group: false,
   header: '',
   header_static: '',
@@ -82,7 +82,7 @@ export const accountDefaultValues: AccountShape = {
   note: '',
   note_emojified: '',
   note_plain: 'string',
-  roles: List<AccountRole>(),
+  roles: ImmutableList<AccountRole>(),
   uri: '',
   url: '',
   username: '',
@@ -139,11 +139,15 @@ export function createAccountFromServerJSON(serverJSON: ApiAccountJSON) {
   return AccountFactory({
     ...accountJSON,
     moved: moved?.id,
-    fields: List(
+    fields: ImmutableList(
       serverJSON.fields.map((field) => createAccountField(field, emojiMap)),
     ),
-    emojis: List(serverJSON.emojis.map((emoji) => CustomEmojiFactory(emoji))),
-    roles: List(serverJSON.roles?.map((role) => AccountRoleFactory(role))),
+    emojis: ImmutableList(
+      serverJSON.emojis.map((emoji) => CustomEmojiFactory(emoji)),
+    ),
+    roles: ImmutableList(
+      serverJSON.roles?.map((role) => AccountRoleFactory(role)),
+    ),
     display_name_html: emojify(
       escapeTextContentForBrowser(displayName),
       emojiMap,
diff --git a/app/javascript/mastodon/reducers/push_notifications.js b/app/javascript/mastodon/reducers/push_notifications.js
index fa8af0e8cc..35c2955b85 100644
--- a/app/javascript/mastodon/reducers/push_notifications.js
+++ b/app/javascript/mastodon/reducers/push_notifications.js
@@ -1,11 +1,11 @@
-import Immutable from 'immutable';
+import { Map as ImmutableMap } from 'immutable';
 
 import { SET_BROWSER_SUPPORT, SET_SUBSCRIPTION, CLEAR_SUBSCRIPTION, SET_ALERTS } from '../actions/push_notifications';
 import { STORE_HYDRATE } from '../actions/store';
 
-const initialState = Immutable.Map({
+const initialState = ImmutableMap({
   subscription: null,
-  alerts: new Immutable.Map({
+  alerts: ImmutableMap({
     follow: false,
     follow_request: false,
     favourite: false,
@@ -24,7 +24,7 @@ export default function push_subscriptions(state = initialState, action) {
 
     if (push_subscription) {
       return state
-        .set('subscription', new Immutable.Map({
+        .set('subscription', ImmutableMap({
           id: push_subscription.get('id'),
           endpoint: push_subscription.get('endpoint'),
         }))
@@ -36,11 +36,11 @@ export default function push_subscriptions(state = initialState, action) {
   }
   case SET_SUBSCRIPTION:
     return state
-      .set('subscription', new Immutable.Map({
+      .set('subscription', ImmutableMap({
         id: action.subscription.id,
         endpoint: action.subscription.endpoint,
       }))
-      .set('alerts', new Immutable.Map(action.subscription.alerts))
+      .set('alerts', ImmutableMap(action.subscription.alerts))
       .set('isSubscribed', true);
   case SET_BROWSER_SUPPORT:
     return state.set('browserSupport', action.value);