diff --git a/app/javascript/mastodon/actions/notifications.js b/app/javascript/mastodon/actions/notifications.js
index cda636139d..c7d2481227 100644
--- a/app/javascript/mastodon/actions/notifications.js
+++ b/app/javascript/mastodon/actions/notifications.js
@@ -1,5 +1,5 @@
 import api, { getLinks } from '../api';
-import Immutable from 'immutable';
+import { List as ImmutableList } from 'immutable';
 import IntlMessageFormat from 'intl-messageformat';
 import { fetchRelationships } from './accounts';
 import { defineMessages } from 'react-intl';
@@ -124,7 +124,7 @@ export function refreshNotificationsFail(error, skipLoading) {
 
 export function expandNotifications() {
   return (dispatch, getState) => {
-    const items  = getState().getIn(['notifications', 'items'], Immutable.List());
+    const items  = getState().getIn(['notifications', 'items'], ImmutableList());
 
     if (getState().getIn(['notifications', 'isLoading']) || items.size === 0) {
       return;
diff --git a/app/javascript/mastodon/actions/store.js b/app/javascript/mastodon/actions/store.js
index efdb0771a5..0597d265ec 100644
--- a/app/javascript/mastodon/actions/store.js
+++ b/app/javascript/mastodon/actions/store.js
@@ -1,11 +1,11 @@
-import Immutable from 'immutable';
+import { Iterable, fromJS } from 'immutable';
 
 export const STORE_HYDRATE = 'STORE_HYDRATE';
 export const STORE_HYDRATE_LAZY = 'STORE_HYDRATE_LAZY';
 
 const convertState = rawState =>
-  Immutable.fromJS(rawState, (k, v) =>
-    Immutable.Iterable.isIndexed(v) ? v.toList() : v.toMap().mapKeys(x =>
+  fromJS(rawState, (k, v) =>
+    Iterable.isIndexed(v) ? v.toList() : v.toMap().mapKeys(x =>
       Number.isNaN(x * 1) ? x : x * 1));
 
 export function hydrateStore(rawState) {
diff --git a/app/javascript/mastodon/actions/timelines.js b/app/javascript/mastodon/actions/timelines.js
index cb4410eba8..dd14cb1cd0 100644
--- a/app/javascript/mastodon/actions/timelines.js
+++ b/app/javascript/mastodon/actions/timelines.js
@@ -1,5 +1,5 @@
 import api, { getLinks } from '../api';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
 
 export const TIMELINE_UPDATE  = 'TIMELINE_UPDATE';
 export const TIMELINE_DELETE  = 'TIMELINE_DELETE';
@@ -66,13 +66,13 @@ export function refreshTimelineRequest(timeline, skipLoading) {
 
 export function refreshTimeline(timelineId, path, params = {}) {
   return function (dispatch, getState) {
-    const timeline = getState().getIn(['timelines', timelineId], Immutable.Map());
+    const timeline = getState().getIn(['timelines', timelineId], ImmutableMap());
 
     if (timeline.get('isLoading') || timeline.get('online')) {
       return;
     }
 
-    const ids      = timeline.get('items', Immutable.List());
+    const ids      = timeline.get('items', ImmutableList());
     const newestId = ids.size > 0 ? ids.first() : null;
 
     let skipLoading = timeline.get('loaded');
@@ -111,8 +111,8 @@ export function refreshTimelineFail(timeline, error, skipLoading) {
 
 export function expandTimeline(timelineId, path, params = {}) {
   return (dispatch, getState) => {
-    const timeline = getState().getIn(['timelines', timelineId], Immutable.Map());
-    const ids      = timeline.get('items', Immutable.List());
+    const timeline = getState().getIn(['timelines', timelineId], ImmutableMap());
+    const ids      = timeline.get('items', ImmutableList());
 
     if (timeline.get('isLoading') || ids.size === 0) {
       return;
diff --git a/app/javascript/mastodon/features/account_timeline/index.js b/app/javascript/mastodon/features/account_timeline/index.js
index 955d0000e7..3c8b63114f 100644
--- a/app/javascript/mastodon/features/account_timeline/index.js
+++ b/app/javascript/mastodon/features/account_timeline/index.js
@@ -9,11 +9,11 @@ import LoadingIndicator from '../../components/loading_indicator';
 import Column from '../ui/components/column';
 import HeaderContainer from './containers/header_container';
 import ColumnBackButton from '../../components/column_back_button';
-import Immutable from 'immutable';
+import { List as ImmutableList } from 'immutable';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 
 const mapStateToProps = (state, props) => ({
-  statusIds: state.getIn(['timelines', `account:${Number(props.params.accountId)}`, 'items'], Immutable.List()),
+  statusIds: state.getIn(['timelines', `account:${Number(props.params.accountId)}`, 'items'], ImmutableList()),
   isLoading: state.getIn(['timelines', `account:${Number(props.params.accountId)}`, 'isLoading']),
   hasMore: !!state.getIn(['timelines', `account:${Number(props.params.accountId)}`, 'next']),
   me: state.getIn(['meta', 'me']),
diff --git a/app/javascript/mastodon/features/notifications/index.js b/app/javascript/mastodon/features/notifications/index.js
index 2f545fa4a3..c5853d3bad 100644
--- a/app/javascript/mastodon/features/notifications/index.js
+++ b/app/javascript/mastodon/features/notifications/index.js
@@ -11,7 +11,7 @@ import { ScrollContainer } from 'react-router-scroll';
 import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 import ColumnSettingsContainer from './containers/column_settings_container';
 import { createSelector } from 'reselect';
-import Immutable from 'immutable';
+import { List as ImmutableList } from 'immutable';
 import LoadMore from '../../components/load_more';
 import { debounce } from 'lodash';
 
@@ -20,7 +20,7 @@ const messages = defineMessages({
 });
 
 const getNotifications = createSelector([
-  state => Immutable.List(state.getIn(['settings', 'notifications', 'shows']).filter(item => !item).keys()),
+  state => ImmutableList(state.getIn(['settings', 'notifications', 'shows']).filter(item => !item).keys()),
   state => state.getIn(['notifications', 'items']),
 ], (excludedTypes, notifications) => notifications.filterNot(item => excludedTypes.includes(item.get('type'))));
 
diff --git a/app/javascript/mastodon/features/report/containers/status_check_box_container.js b/app/javascript/mastodon/features/report/containers/status_check_box_container.js
index 8997718a2a..48cd0319bd 100644
--- a/app/javascript/mastodon/features/report/containers/status_check_box_container.js
+++ b/app/javascript/mastodon/features/report/containers/status_check_box_container.js
@@ -1,11 +1,11 @@
 import { connect } from 'react-redux';
 import StatusCheckBox from '../components/status_check_box';
 import { toggleStatusReport } from '../../../actions/reports';
-import Immutable from 'immutable';
+import { Set as ImmutableSet } from 'immutable';
 
 const mapStateToProps = (state, { id }) => ({
   status: state.getIn(['statuses', id]),
-  checked: state.getIn(['reports', 'new', 'status_ids'], Immutable.Set()).includes(id),
+  checked: state.getIn(['reports', 'new', 'status_ids'], ImmutableSet()).includes(id),
 });
 
 const mapDispatchToProps = (dispatch, { id }) => ({
diff --git a/app/javascript/mastodon/features/ui/components/onboarding_modal.js b/app/javascript/mastodon/features/ui/components/onboarding_modal.js
index 189bd86651..3d59785e2f 100644
--- a/app/javascript/mastodon/features/ui/components/onboarding_modal.js
+++ b/app/javascript/mastodon/features/ui/components/onboarding_modal.js
@@ -10,7 +10,7 @@ import ComposeForm from '../../compose/components/compose_form';
 import Search from '../../compose/components/search';
 import NavigationBar from '../../compose/components/navigation_bar';
 import ColumnHeader from './column_header';
-import Immutable from 'immutable';
+import { List as ImmutableList } from 'immutable';
 
 const noop = () => { };
 
@@ -48,7 +48,7 @@ const PageTwo = ({ me }) => (
       </div>
       <ComposeForm
         text='Awoo! #introductions'
-        suggestions={Immutable.List()}
+        suggestions={ImmutableList()}
         mentionedDomains={[]}
         spoiler={false}
         onChange={noop}
diff --git a/app/javascript/mastodon/features/ui/components/report_modal.js b/app/javascript/mastodon/features/ui/components/report_modal.js
index c989d2c9b3..b5dfa422e4 100644
--- a/app/javascript/mastodon/features/ui/components/report_modal.js
+++ b/app/javascript/mastodon/features/ui/components/report_modal.js
@@ -7,7 +7,7 @@ import ImmutablePropTypes from 'react-immutable-proptypes';
 import { makeGetAccount } from '../../../selectors';
 import { defineMessages, FormattedMessage, injectIntl } from 'react-intl';
 import StatusCheckBox from '../../report/containers/status_check_box_container';
-import Immutable from 'immutable';
+import { OrderedSet } from 'immutable';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import Button from '../../../components/button';
 
@@ -26,7 +26,7 @@ const makeMapStateToProps = () => {
       isSubmitting: state.getIn(['reports', 'new', 'isSubmitting']),
       account: getAccount(state, accountId),
       comment: state.getIn(['reports', 'new', 'comment']),
-      statusIds: Immutable.OrderedSet(state.getIn(['timelines', `account:${accountId}`, 'items'])).union(state.getIn(['reports', 'new', 'status_ids'])),
+      statusIds: OrderedSet(state.getIn(['timelines', `account:${accountId}`, 'items'])).union(state.getIn(['reports', 'new', 'status_ids'])),
     };
   };
 
diff --git a/app/javascript/mastodon/features/ui/containers/status_list_container.js b/app/javascript/mastodon/features/ui/containers/status_list_container.js
index 45ad6209b6..1b2e1056a3 100644
--- a/app/javascript/mastodon/features/ui/containers/status_list_container.js
+++ b/app/javascript/mastodon/features/ui/containers/status_list_container.js
@@ -1,13 +1,13 @@
 import { connect } from 'react-redux';
 import StatusList from '../../../components/status_list';
 import { scrollTopTimeline } from '../../../actions/timelines';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
 import { createSelector } from 'reselect';
 import { debounce } from 'lodash';
 
 const makeGetStatusIds = () => createSelector([
-  (state, { type }) => state.getIn(['settings', type], Immutable.Map()),
-  (state, { type }) => state.getIn(['timelines', type, 'items'], Immutable.List()),
+  (state, { type }) => state.getIn(['settings', type], ImmutableMap()),
+  (state, { type }) => state.getIn(['timelines', type, 'items'], ImmutableList()),
   (state)           => state.get('statuses'),
   (state)           => state.getIn(['meta', 'me']),
 ], (columnSettings, statusIds, statuses, me) => statusIds.filter(id => {
diff --git a/app/javascript/mastodon/reducers/accounts.js b/app/javascript/mastodon/reducers/accounts.js
index 7b70743173..4d7c3adc97 100644
--- a/app/javascript/mastodon/reducers/accounts.js
+++ b/app/javascript/mastodon/reducers/accounts.js
@@ -44,7 +44,7 @@ import {
   FAVOURITED_STATUSES_EXPAND_SUCCESS,
 } from '../actions/favourites';
 import { STORE_HYDRATE } from '../actions/store';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, fromJS } from 'immutable';
 
 const normalizeAccount = (state, account) => {
   account = { ...account };
@@ -53,7 +53,7 @@ const normalizeAccount = (state, account) => {
   delete account.following_count;
   delete account.statuses_count;
 
-  return state.set(account.id, Immutable.fromJS(account));
+  return state.set(account.id, fromJS(account));
 };
 
 const normalizeAccounts = (state, accounts) => {
@@ -82,7 +82,7 @@ const normalizeAccountsFromStatuses = (state, statuses) => {
   return state;
 };
 
-const initialState = Immutable.Map();
+const initialState = ImmutableMap();
 
 export default function accounts(state = initialState, action) {
   switch(action.type) {
diff --git a/app/javascript/mastodon/reducers/accounts_counters.js b/app/javascript/mastodon/reducers/accounts_counters.js
index eb8a4f83dc..4423e1b50e 100644
--- a/app/javascript/mastodon/reducers/accounts_counters.js
+++ b/app/javascript/mastodon/reducers/accounts_counters.js
@@ -46,9 +46,9 @@ import {
   FAVOURITED_STATUSES_EXPAND_SUCCESS,
 } from '../actions/favourites';
 import { STORE_HYDRATE } from '../actions/store';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, fromJS } from 'immutable';
 
-const normalizeAccount = (state, account) => state.set(account.id, Immutable.fromJS({
+const normalizeAccount = (state, account) => state.set(account.id, fromJS({
   followers_count: account.followers_count,
   following_count: account.following_count,
   statuses_count: account.statuses_count,
@@ -80,12 +80,12 @@ const normalizeAccountsFromStatuses = (state, statuses) => {
   return state;
 };
 
-const initialState = Immutable.Map();
+const initialState = ImmutableMap();
 
 export default function accountsCounters(state = initialState, action) {
   switch(action.type) {
   case STORE_HYDRATE:
-    return state.merge(action.state.get('accounts').map(item => Immutable.fromJS({
+    return state.merge(action.state.get('accounts').map(item => fromJS({
       followers_count: item.get('followers_count'),
       following_count: item.get('following_count'),
       statuses_count: item.get('statuses_count'),
diff --git a/app/javascript/mastodon/reducers/alerts.js b/app/javascript/mastodon/reducers/alerts.js
index aaea9775f3..089d920c3e 100644
--- a/app/javascript/mastodon/reducers/alerts.js
+++ b/app/javascript/mastodon/reducers/alerts.js
@@ -3,14 +3,14 @@ import {
   ALERT_DISMISS,
   ALERT_CLEAR,
 } from '../actions/alerts';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
 
-const initialState = Immutable.List([]);
+const initialState = ImmutableList([]);
 
 export default function alerts(state = initialState, action) {
   switch(action.type) {
   case ALERT_SHOW:
-    return state.push(Immutable.Map({
+    return state.push(ImmutableMap({
       key: state.size > 0 ? state.last().get('key') + 1 : 0,
       title: action.title,
       message: action.message,
diff --git a/app/javascript/mastodon/reducers/cards.js b/app/javascript/mastodon/reducers/cards.js
index 3c9395011e..4d86b0d7e7 100644
--- a/app/javascript/mastodon/reducers/cards.js
+++ b/app/javascript/mastodon/reducers/cards.js
@@ -1,13 +1,13 @@
 import { STATUS_CARD_FETCH_SUCCESS } from '../actions/cards';
 
-import Immutable from 'immutable';
+import { Map as ImmutableMap, fromJS } from 'immutable';
 
-const initialState = Immutable.Map();
+const initialState = ImmutableMap();
 
 export default function cards(state = initialState, action) {
   switch(action.type) {
   case STATUS_CARD_FETCH_SUCCESS:
-    return state.set(action.id, Immutable.fromJS(action.card));
+    return state.set(action.id, fromJS(action.card));
   default:
     return state;
   }
diff --git a/app/javascript/mastodon/reducers/compose.js b/app/javascript/mastodon/reducers/compose.js
index 7523777394..a92b5aa236 100644
--- a/app/javascript/mastodon/reducers/compose.js
+++ b/app/javascript/mastodon/reducers/compose.js
@@ -24,10 +24,10 @@ import {
 } from '../actions/compose';
 import { TIMELINE_DELETE } from '../actions/timelines';
 import { STORE_HYDRATE } from '../actions/store';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList, OrderedSet as ImmutableOrderedSet, fromJS } from 'immutable';
 import uuid from '../uuid';
 
-const initialState = Immutable.Map({
+const initialState = ImmutableMap({
   mounted: false,
   sensitive: false,
   spoiler: false,
@@ -40,9 +40,9 @@ const initialState = Immutable.Map({
   is_submitting: false,
   is_uploading: false,
   progress: 0,
-  media_attachments: Immutable.List(),
+  media_attachments: ImmutableList(),
   suggestion_token: null,
-  suggestions: Immutable.List(),
+  suggestions: ImmutableList(),
   me: null,
   default_privacy: 'public',
   default_sensitive: false,
@@ -51,7 +51,7 @@ const initialState = Immutable.Map({
 });
 
 function statusToTextMentions(state, status) {
-  let set = Immutable.OrderedSet([]);
+  let set = ImmutableOrderedSet([]);
   let me  = state.get('me');
 
   if (status.getIn(['account', 'id']) !== me) {
@@ -111,7 +111,7 @@ const insertSuggestion = (state, position, token, completion) => {
   return state.withMutations(map => {
     map.update('text', oldText => `${oldText.slice(0, position)}${completion} ${oldText.slice(position + token.length)}`);
     map.set('suggestion_token', null);
-    map.update('suggestions', Immutable.List(), list => list.clear());
+    map.update('suggestions', ImmutableList(), list => list.clear());
     map.set('focusDate', new Date());
     map.set('idempotencyKey', uuid());
   });
@@ -206,7 +206,7 @@ export default function compose(state = initialState, action) {
       map.set('is_uploading', true);
     });
   case COMPOSE_UPLOAD_SUCCESS:
-    return appendMedia(state, Immutable.fromJS(action.media));
+    return appendMedia(state, fromJS(action.media));
   case COMPOSE_UPLOAD_FAIL:
     return state.set('is_uploading', false);
   case COMPOSE_UPLOAD_UNDO:
@@ -219,9 +219,9 @@ export default function compose(state = initialState, action) {
       .set('focusDate', new Date())
       .set('idempotencyKey', uuid());
   case COMPOSE_SUGGESTIONS_CLEAR:
-    return state.update('suggestions', Immutable.List(), list => list.clear()).set('suggestion_token', null);
+    return state.update('suggestions', ImmutableList(), list => list.clear()).set('suggestion_token', null);
   case COMPOSE_SUGGESTIONS_READY:
-    return state.set('suggestions', Immutable.List(action.accounts.map(item => item.id))).set('suggestion_token', action.token);
+    return state.set('suggestions', ImmutableList(action.accounts.map(item => item.id))).set('suggestion_token', action.token);
   case COMPOSE_SUGGESTION_SELECT:
     return insertSuggestion(state, action.position, action.token, action.completion);
   case TIMELINE_DELETE:
diff --git a/app/javascript/mastodon/reducers/contexts.js b/app/javascript/mastodon/reducers/contexts.js
index 8a24f5f7af..9bfc09aa75 100644
--- a/app/javascript/mastodon/reducers/contexts.js
+++ b/app/javascript/mastodon/reducers/contexts.js
@@ -1,10 +1,10 @@
 import { CONTEXT_FETCH_SUCCESS } from '../actions/statuses';
 import { TIMELINE_DELETE } from '../actions/timelines';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList, fromJS } from 'immutable';
 
-const initialState = Immutable.Map({
-  ancestors: Immutable.Map(),
-  descendants: Immutable.Map(),
+const initialState = ImmutableMap({
+  ancestors: ImmutableMap(),
+  descendants: ImmutableMap(),
 });
 
 const normalizeContext = (state, id, ancestors, descendants) => {
@@ -18,12 +18,12 @@ const normalizeContext = (state, id, ancestors, descendants) => {
 };
 
 const deleteFromContexts = (state, id) => {
-  state.getIn(['descendants', id], Immutable.List()).forEach(descendantId => {
-    state = state.updateIn(['ancestors', descendantId], Immutable.List(), list => list.filterNot(itemId => itemId === id));
+  state.getIn(['descendants', id], ImmutableList()).forEach(descendantId => {
+    state = state.updateIn(['ancestors', descendantId], ImmutableList(), list => list.filterNot(itemId => itemId === id));
   });
 
-  state.getIn(['ancestors', id], Immutable.List()).forEach(ancestorId => {
-    state = state.updateIn(['descendants', ancestorId], Immutable.List(), list => list.filterNot(itemId => itemId === id));
+  state.getIn(['ancestors', id], ImmutableList()).forEach(ancestorId => {
+    state = state.updateIn(['descendants', ancestorId], ImmutableList(), list => list.filterNot(itemId => itemId === id));
   });
 
   state = state.deleteIn(['descendants', id]).deleteIn(['ancestors', id]);
@@ -34,7 +34,7 @@ const deleteFromContexts = (state, id) => {
 export default function contexts(state = initialState, action) {
   switch(action.type) {
   case CONTEXT_FETCH_SUCCESS:
-    return normalizeContext(state, action.id, Immutable.fromJS(action.ancestors), Immutable.fromJS(action.descendants));
+    return normalizeContext(state, action.id, fromJS(action.ancestors), fromJS(action.descendants));
   case TIMELINE_DELETE:
     return deleteFromContexts(state, action.id);
   default:
diff --git a/app/javascript/mastodon/reducers/media_attachments.js b/app/javascript/mastodon/reducers/media_attachments.js
index 85bea4f0b3..24119f6286 100644
--- a/app/javascript/mastodon/reducers/media_attachments.js
+++ b/app/javascript/mastodon/reducers/media_attachments.js
@@ -1,7 +1,7 @@
 import { STORE_HYDRATE } from '../actions/store';
-import Immutable from 'immutable';
+import { Map as ImmutableMap } from 'immutable';
 
-const initialState = Immutable.Map({
+const initialState = ImmutableMap({
   accept_content_types: [],
 });
 
diff --git a/app/javascript/mastodon/reducers/meta.js b/app/javascript/mastodon/reducers/meta.js
index 1551228ec7..119ef9d8f8 100644
--- a/app/javascript/mastodon/reducers/meta.js
+++ b/app/javascript/mastodon/reducers/meta.js
@@ -1,7 +1,7 @@
 import { STORE_HYDRATE } from '../actions/store';
-import Immutable from 'immutable';
+import { Map as ImmutableMap } from 'immutable';
 
-const initialState = Immutable.Map({
+const initialState = ImmutableMap({
   streaming_api_base_url: null,
   access_token: null,
   me: null,
diff --git a/app/javascript/mastodon/reducers/notifications.js b/app/javascript/mastodon/reducers/notifications.js
index 0c1cf5b0f2..0063d24e45 100644
--- a/app/javascript/mastodon/reducers/notifications.js
+++ b/app/javascript/mastodon/reducers/notifications.js
@@ -11,10 +11,10 @@ import {
 } from '../actions/notifications';
 import { ACCOUNT_BLOCK_SUCCESS } from '../actions/accounts';
 import { TIMELINE_DELETE } from '../actions/timelines';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
 
-const initialState = Immutable.Map({
-  items: Immutable.List(),
+const initialState = ImmutableMap({
+  items: ImmutableList(),
   next: null,
   top: true,
   unread: 0,
@@ -22,7 +22,7 @@ const initialState = Immutable.Map({
   isLoading: true,
 });
 
-const notificationToMap = notification => Immutable.Map({
+const notificationToMap = notification => ImmutableMap({
   id: notification.id,
   type: notification.type,
   account: notification.account.id,
@@ -46,7 +46,7 @@ const normalizeNotification = (state, notification) => {
 };
 
 const normalizeNotifications = (state, notifications, next) => {
-  let items    = Immutable.List();
+  let items    = ImmutableList();
   const loaded = state.get('loaded');
 
   notifications.forEach((n, i) => {
@@ -64,7 +64,7 @@ const normalizeNotifications = (state, notifications, next) => {
 };
 
 const appendNormalizedNotifications = (state, notifications, next) => {
-  let items = Immutable.List();
+  let items = ImmutableList();
 
   notifications.forEach((n, i) => {
     items = items.set(i, notificationToMap(n));
@@ -110,7 +110,7 @@ export default function notifications(state = initialState, action) {
   case ACCOUNT_BLOCK_SUCCESS:
     return filterNotifications(state, action.relationship);
   case NOTIFICATIONS_CLEAR:
-    return state.set('items', Immutable.List()).set('next', null);
+    return state.set('items', ImmutableList()).set('next', null);
   case TIMELINE_DELETE:
     return deleteByStatus(state, action.id);
   default:
diff --git a/app/javascript/mastodon/reducers/relationships.js b/app/javascript/mastodon/reducers/relationships.js
index b6607860cc..c7b04a6683 100644
--- a/app/javascript/mastodon/reducers/relationships.js
+++ b/app/javascript/mastodon/reducers/relationships.js
@@ -11,9 +11,9 @@ import {
   DOMAIN_BLOCK_SUCCESS,
   DOMAIN_UNBLOCK_SUCCESS,
 } from '../actions/domain_blocks';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, fromJS } from 'immutable';
 
-const normalizeRelationship = (state, relationship) => state.set(relationship.id, Immutable.fromJS(relationship));
+const normalizeRelationship = (state, relationship) => state.set(relationship.id, fromJS(relationship));
 
 const normalizeRelationships = (state, relationships) => {
   relationships.forEach(relationship => {
@@ -23,7 +23,7 @@ const normalizeRelationships = (state, relationships) => {
   return state;
 };
 
-const initialState = Immutable.Map();
+const initialState = ImmutableMap();
 
 export default function relationships(state = initialState, action) {
   switch(action.type) {
diff --git a/app/javascript/mastodon/reducers/reports.js b/app/javascript/mastodon/reducers/reports.js
index ad35eaa059..283c5b6f5e 100644
--- a/app/javascript/mastodon/reducers/reports.js
+++ b/app/javascript/mastodon/reducers/reports.js
@@ -7,13 +7,13 @@ import {
   REPORT_STATUS_TOGGLE,
   REPORT_COMMENT_CHANGE,
 } from '../actions/reports';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, Set as ImmutableSet } from 'immutable';
 
-const initialState = Immutable.Map({
-  new: Immutable.Map({
+const initialState = ImmutableMap({
+  new: ImmutableMap({
     isSubmitting: false,
     account_id: null,
-    status_ids: Immutable.Set(),
+    status_ids: ImmutableSet(),
     comment: '',
   }),
 });
@@ -26,14 +26,14 @@ export default function reports(state = initialState, action) {
       map.setIn(['new', 'account_id'], action.account.get('id'));
 
       if (state.getIn(['new', 'account_id']) !== action.account.get('id')) {
-        map.setIn(['new', 'status_ids'], action.status ? Immutable.Set([action.status.getIn(['reblog', 'id'], action.status.get('id'))]) : Immutable.Set());
+        map.setIn(['new', 'status_ids'], action.status ? ImmutableSet([action.status.getIn(['reblog', 'id'], action.status.get('id'))]) : ImmutableSet());
         map.setIn(['new', 'comment'], '');
       } else {
-        map.updateIn(['new', 'status_ids'], Immutable.Set(), set => set.add(action.status.getIn(['reblog', 'id'], action.status.get('id'))));
+        map.updateIn(['new', 'status_ids'], ImmutableSet(), set => set.add(action.status.getIn(['reblog', 'id'], action.status.get('id'))));
       }
     });
   case REPORT_STATUS_TOGGLE:
-    return state.updateIn(['new', 'status_ids'], Immutable.Set(), set => {
+    return state.updateIn(['new', 'status_ids'], ImmutableSet(), set => {
       if (action.checked) {
         return set.add(action.statusId);
       }
@@ -50,7 +50,7 @@ export default function reports(state = initialState, action) {
   case REPORT_SUBMIT_SUCCESS:
     return state.withMutations(map => {
       map.setIn(['new', 'account_id'], null);
-      map.setIn(['new', 'status_ids'], Immutable.Set());
+      map.setIn(['new', 'status_ids'], ImmutableSet());
       map.setIn(['new', 'comment'], '');
       map.setIn(['new', 'isSubmitting'], false);
     });
diff --git a/app/javascript/mastodon/reducers/search.js b/app/javascript/mastodon/reducers/search.js
index 0a3adac05c..08d90e4e83 100644
--- a/app/javascript/mastodon/reducers/search.js
+++ b/app/javascript/mastodon/reducers/search.js
@@ -5,13 +5,13 @@ import {
   SEARCH_SHOW,
 } from '../actions/search';
 import { COMPOSE_MENTION, COMPOSE_REPLY } from '../actions/compose';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
 
-const initialState = Immutable.Map({
+const initialState = ImmutableMap({
   value: '',
   submitted: false,
   hidden: false,
-  results: Immutable.Map(),
+  results: ImmutableMap(),
 });
 
 export default function search(state = initialState, action) {
@@ -21,7 +21,7 @@ export default function search(state = initialState, action) {
   case SEARCH_CLEAR:
     return state.withMutations(map => {
       map.set('value', '');
-      map.set('results', Immutable.Map());
+      map.set('results', ImmutableMap());
       map.set('submitted', false);
       map.set('hidden', false);
     });
@@ -31,10 +31,10 @@ export default function search(state = initialState, action) {
   case COMPOSE_MENTION:
     return state.set('hidden', true);
   case SEARCH_FETCH_SUCCESS:
-    return state.set('results', Immutable.Map({
-      accounts: Immutable.List(action.results.accounts.map(item => item.id)),
-      statuses: Immutable.List(action.results.statuses.map(item => item.id)),
-      hashtags: Immutable.List(action.results.hashtags),
+    return state.set('results', ImmutableMap({
+      accounts: ImmutableList(action.results.accounts.map(item => item.id)),
+      statuses: ImmutableList(action.results.statuses.map(item => item.id)),
+      hashtags: ImmutableList(action.results.hashtags),
     })).set('submitted', true);
   default:
     return state;
diff --git a/app/javascript/mastodon/reducers/settings.js b/app/javascript/mastodon/reducers/settings.js
index ddad7a4fc2..dd2d76ec02 100644
--- a/app/javascript/mastodon/reducers/settings.js
+++ b/app/javascript/mastodon/reducers/settings.js
@@ -1,39 +1,39 @@
 import { SETTING_CHANGE } from '../actions/settings';
 import { COLUMN_ADD, COLUMN_REMOVE, COLUMN_MOVE } from '../actions/columns';
 import { STORE_HYDRATE } from '../actions/store';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, fromJS } from 'immutable';
 import uuid from '../uuid';
 
-const initialState = Immutable.Map({
+const initialState = ImmutableMap({
   onboarded: false,
 
-  home: Immutable.Map({
-    shows: Immutable.Map({
+  home: ImmutableMap({
+    shows: ImmutableMap({
       reblog: true,
       reply: true,
     }),
 
-    regex: Immutable.Map({
+    regex: ImmutableMap({
       body: '',
     }),
   }),
 
-  notifications: Immutable.Map({
-    alerts: Immutable.Map({
+  notifications: ImmutableMap({
+    alerts: ImmutableMap({
       follow: true,
       favourite: true,
       reblog: true,
       mention: true,
     }),
 
-    shows: Immutable.Map({
+    shows: ImmutableMap({
       follow: true,
       favourite: true,
       reblog: true,
       mention: true,
     }),
 
-    sounds: Immutable.Map({
+    sounds: ImmutableMap({
       follow: true,
       favourite: true,
       reblog: true,
@@ -41,20 +41,20 @@ const initialState = Immutable.Map({
     }),
   }),
 
-  community: Immutable.Map({
-    regex: Immutable.Map({
+  community: ImmutableMap({
+    regex: ImmutableMap({
       body: '',
     }),
   }),
 
-  public: Immutable.Map({
-    regex: Immutable.Map({
+  public: ImmutableMap({
+    regex: ImmutableMap({
       body: '',
     }),
   }),
 });
 
-const defaultColumns = Immutable.fromJS([
+const defaultColumns = fromJS([
   { id: 'COMPOSE', uuid: uuid(), params: {} },
   { id: 'HOME', uuid: uuid(), params: {} },
   { id: 'NOTIFICATIONS', uuid: uuid(), params: {} },
@@ -82,7 +82,7 @@ export default function settings(state = initialState, action) {
   case SETTING_CHANGE:
     return state.setIn(action.key, action.value);
   case COLUMN_ADD:
-    return state.update('columns', list => list.push(Immutable.fromJS({ id: action.id, uuid: uuid(), params: action.params })));
+    return state.update('columns', list => list.push(fromJS({ id: action.id, uuid: uuid(), params: action.params })));
   case COLUMN_REMOVE:
     return state.update('columns', list => list.filterNot(item => item.get('uuid') === action.uuid));
   case COLUMN_MOVE:
diff --git a/app/javascript/mastodon/reducers/status_lists.js b/app/javascript/mastodon/reducers/status_lists.js
index 7d00f6d309..bbc9733027 100644
--- a/app/javascript/mastodon/reducers/status_lists.js
+++ b/app/javascript/mastodon/reducers/status_lists.js
@@ -2,13 +2,13 @@ import {
   FAVOURITED_STATUSES_FETCH_SUCCESS,
   FAVOURITED_STATUSES_EXPAND_SUCCESS,
 } from '../actions/favourites';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
 
-const initialState = Immutable.Map({
-  favourites: Immutable.Map({
+const initialState = ImmutableMap({
+  favourites: ImmutableMap({
     next: null,
     loaded: false,
-    items: Immutable.List(),
+    items: ImmutableList(),
   }),
 });
 
@@ -16,7 +16,7 @@ const normalizeList = (state, listType, statuses, next) => {
   return state.update(listType, listMap => listMap.withMutations(map => {
     map.set('next', next);
     map.set('loaded', true);
-    map.set('items', Immutable.List(statuses.map(item => item.id)));
+    map.set('items', ImmutableList(statuses.map(item => item.id)));
   }));
 };
 
diff --git a/app/javascript/mastodon/reducers/statuses.js b/app/javascript/mastodon/reducers/statuses.js
index 691135ff7d..b1b1d0988e 100644
--- a/app/javascript/mastodon/reducers/statuses.js
+++ b/app/javascript/mastodon/reducers/statuses.js
@@ -33,7 +33,7 @@ import {
   FAVOURITED_STATUSES_EXPAND_SUCCESS,
 } from '../actions/favourites';
 import { SEARCH_FETCH_SUCCESS } from '../actions/search';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, fromJS } from 'immutable';
 
 const normalizeStatus = (state, status) => {
   if (!status) {
@@ -51,7 +51,7 @@ const normalizeStatus = (state, status) => {
   const searchContent = [status.spoiler_text, status.content].join(' ').replace(/<br \/>/g, '\n').replace(/<\/p><p>/g, '\n\n');
   normalStatus.search_index = new DOMParser().parseFromString(searchContent, 'text/html').documentElement.textContent;
 
-  return state.update(status.id, Immutable.Map(), map => map.mergeDeep(Immutable.fromJS(normalStatus)));
+  return state.update(status.id, ImmutableMap(), map => map.mergeDeep(fromJS(normalStatus)));
 };
 
 const normalizeStatuses = (state, statuses) => {
@@ -82,7 +82,7 @@ const filterStatuses = (state, relationship) => {
   return state;
 };
 
-const initialState = Immutable.Map();
+const initialState = ImmutableMap();
 
 export default function statuses(state = initialState, action) {
   switch(action.type) {
diff --git a/app/javascript/mastodon/reducers/timelines.js b/app/javascript/mastodon/reducers/timelines.js
index 1b738a16aa..065e89f961 100644
--- a/app/javascript/mastodon/reducers/timelines.js
+++ b/app/javascript/mastodon/reducers/timelines.js
@@ -15,25 +15,25 @@ import {
   ACCOUNT_BLOCK_SUCCESS,
   ACCOUNT_MUTE_SUCCESS,
 } from '../actions/accounts';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList, fromJS } from 'immutable';
 
-const initialState = Immutable.Map();
+const initialState = ImmutableMap();
 
-const initialTimeline = Immutable.Map({
+const initialTimeline = ImmutableMap({
   unread: 0,
   online: false,
   top: true,
   loaded: false,
   isLoading: false,
   next: false,
-  items: Immutable.List(),
+  items: ImmutableList(),
 });
 
 const normalizeTimeline = (state, timeline, statuses, next) => {
-  const ids       = Immutable.List(statuses.map(status => status.get('id')));
+  const ids       = ImmutableList(statuses.map(status => status.get('id')));
   const wasLoaded = state.getIn([timeline, 'loaded']);
   const hadNext   = state.getIn([timeline, 'next']);
-  const oldIds    = state.getIn([timeline, 'items'], Immutable.List());
+  const oldIds    = state.getIn([timeline, 'items'], ImmutableList());
 
   return state.update(timeline, initialTimeline, map => map.withMutations(mMap => {
     mMap.set('loaded', true);
@@ -44,8 +44,8 @@ const normalizeTimeline = (state, timeline, statuses, next) => {
 };
 
 const appendNormalizedTimeline = (state, timeline, statuses, next) => {
-  const ids    = Immutable.List(statuses.map(status => status.get('id')));
-  const oldIds = state.getIn([timeline, 'items'], Immutable.List());
+  const ids    = ImmutableList(statuses.map(status => status.get('id')));
+  const oldIds = state.getIn([timeline, 'items'], ImmutableList());
 
   return state.update(timeline, initialTimeline, map => map.withMutations(mMap => {
     mMap.set('isLoading', false);
@@ -56,7 +56,7 @@ const appendNormalizedTimeline = (state, timeline, statuses, next) => {
 
 const updateTimeline = (state, timeline, status, references) => {
   const top        = state.getIn([timeline, 'top']);
-  const ids        = state.getIn([timeline, 'items'], Immutable.List());
+  const ids        = state.getIn([timeline, 'items'], ImmutableList());
   const includesId = ids.includes(status.get('id'));
   const unread     = state.getIn([timeline, 'unread'], 0);
 
@@ -124,11 +124,11 @@ export default function timelines(state = initialState, action) {
   case TIMELINE_EXPAND_FAIL:
     return state.update(action.timeline, initialTimeline, map => map.set('isLoading', false));
   case TIMELINE_REFRESH_SUCCESS:
-    return normalizeTimeline(state, action.timeline, Immutable.fromJS(action.statuses), action.next);
+    return normalizeTimeline(state, action.timeline, fromJS(action.statuses), action.next);
   case TIMELINE_EXPAND_SUCCESS:
-    return appendNormalizedTimeline(state, action.timeline, Immutable.fromJS(action.statuses), action.next);
+    return appendNormalizedTimeline(state, action.timeline, fromJS(action.statuses), action.next);
   case TIMELINE_UPDATE:
-    return updateTimeline(state, action.timeline, Immutable.fromJS(action.status), action.references);
+    return updateTimeline(state, action.timeline, fromJS(action.status), action.references);
   case TIMELINE_DELETE:
     return deleteStatus(state, action.id, action.accountId, action.references, action.reblogOf);
   case ACCOUNT_BLOCK_SUCCESS:
diff --git a/app/javascript/mastodon/reducers/user_lists.js b/app/javascript/mastodon/reducers/user_lists.js
index 83bf1be1bc..8db18c5dc6 100644
--- a/app/javascript/mastodon/reducers/user_lists.js
+++ b/app/javascript/mastodon/reducers/user_lists.js
@@ -20,22 +20,22 @@ import {
   MUTES_FETCH_SUCCESS,
   MUTES_EXPAND_SUCCESS,
 } from '../actions/mutes';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
 
-const initialState = Immutable.Map({
-  followers: Immutable.Map(),
-  following: Immutable.Map(),
-  reblogged_by: Immutable.Map(),
-  favourited_by: Immutable.Map(),
-  follow_requests: Immutable.Map(),
-  blocks: Immutable.Map(),
-  mutes: Immutable.Map(),
+const initialState = ImmutableMap({
+  followers: ImmutableMap(),
+  following: ImmutableMap(),
+  reblogged_by: ImmutableMap(),
+  favourited_by: ImmutableMap(),
+  follow_requests: ImmutableMap(),
+  blocks: ImmutableMap(),
+  mutes: ImmutableMap(),
 });
 
 const normalizeList = (state, type, id, accounts, next) => {
-  return state.setIn([type, id], Immutable.Map({
+  return state.setIn([type, id], ImmutableMap({
     next,
-    items: Immutable.List(accounts.map(item => item.id)),
+    items: ImmutableList(accounts.map(item => item.id)),
   }));
 };
 
@@ -56,22 +56,22 @@ export default function userLists(state = initialState, action) {
   case FOLLOWING_EXPAND_SUCCESS:
     return appendToList(state, 'following', action.id, action.accounts, action.next);
   case REBLOGS_FETCH_SUCCESS:
-    return state.setIn(['reblogged_by', action.id], Immutable.List(action.accounts.map(item => item.id)));
+    return state.setIn(['reblogged_by', action.id], ImmutableList(action.accounts.map(item => item.id)));
   case FAVOURITES_FETCH_SUCCESS:
-    return state.setIn(['favourited_by', action.id], Immutable.List(action.accounts.map(item => item.id)));
+    return state.setIn(['favourited_by', action.id], ImmutableList(action.accounts.map(item => item.id)));
   case FOLLOW_REQUESTS_FETCH_SUCCESS:
-    return state.setIn(['follow_requests', 'items'], Immutable.List(action.accounts.map(item => item.id))).setIn(['follow_requests', 'next'], action.next);
+    return state.setIn(['follow_requests', 'items'], ImmutableList(action.accounts.map(item => item.id))).setIn(['follow_requests', 'next'], action.next);
   case FOLLOW_REQUESTS_EXPAND_SUCCESS:
     return state.updateIn(['follow_requests', 'items'], list => list.concat(action.accounts.map(item => item.id))).setIn(['follow_requests', 'next'], action.next);
   case FOLLOW_REQUEST_AUTHORIZE_SUCCESS:
   case FOLLOW_REQUEST_REJECT_SUCCESS:
     return state.updateIn(['follow_requests', 'items'], list => list.filterNot(item => item === action.id));
   case BLOCKS_FETCH_SUCCESS:
-    return state.setIn(['blocks', 'items'], Immutable.List(action.accounts.map(item => item.id))).setIn(['blocks', 'next'], action.next);
+    return state.setIn(['blocks', 'items'], ImmutableList(action.accounts.map(item => item.id))).setIn(['blocks', 'next'], action.next);
   case BLOCKS_EXPAND_SUCCESS:
     return state.updateIn(['blocks', 'items'], list => list.concat(action.accounts.map(item => item.id))).setIn(['blocks', 'next'], action.next);
   case MUTES_FETCH_SUCCESS:
-    return state.setIn(['mutes', 'items'], Immutable.List(action.accounts.map(item => item.id))).setIn(['mutes', 'next'], action.next);
+    return state.setIn(['mutes', 'items'], ImmutableList(action.accounts.map(item => item.id))).setIn(['mutes', 'next'], action.next);
   case MUTES_EXPAND_SUCCESS:
     return state.updateIn(['mutes', 'items'], list => list.concat(action.accounts.map(item => item.id))).setIn(['mutes', 'next'], action.next);
   default:
diff --git a/app/javascript/mastodon/selectors/index.js b/app/javascript/mastodon/selectors/index.js
index 07d9a2629b..d26d1b727f 100644
--- a/app/javascript/mastodon/selectors/index.js
+++ b/app/javascript/mastodon/selectors/index.js
@@ -1,5 +1,5 @@
 import { createSelector } from 'reselect';
-import Immutable from 'immutable';
+import { List as ImmutableList } from 'immutable';
 
 const getAccountBase         = (state, id) => state.getIn(['accounts', id], null);
 const getAccountCounters     = (state, id) => state.getIn(['accounts_counters', id], null);
@@ -73,10 +73,10 @@ export const makeGetNotification = () => {
 };
 
 export const getAccountGallery = createSelector([
-  (state, id) => state.getIn(['timelines', `account:${id}:media`, 'items'], Immutable.List()),
+  (state, id) => state.getIn(['timelines', `account:${id}:media`, 'items'], ImmutableList()),
   state       => state.get('statuses'),
 ], (statusIds, statuses) => {
-  let medias = Immutable.List();
+  let medias = ImmutableList();
 
   statusIds.forEach(statusId => {
     const status = statuses.get(statusId);
diff --git a/spec/javascript/components/display_name.test.js b/spec/javascript/components/display_name.test.js
index d6dc7edc09..ad9288d4df 100644
--- a/spec/javascript/components/display_name.test.js
+++ b/spec/javascript/components/display_name.test.js
@@ -1,12 +1,12 @@
 import { expect } from 'chai';
 import { render } from 'enzyme';
-import Immutable  from 'immutable';
+import { fromJS }  from 'immutable';
 import React from 'react';
 import DisplayName from '../../../app/javascript/mastodon/components/display_name';
 
 describe('<DisplayName />', () => {
   it('renders display name + account name', () => {
-    const account = Immutable.fromJS({
+    const account = fromJS({
       username: 'bar',
       acct: 'bar@baz',
       display_name: 'Foo',
@@ -16,7 +16,7 @@ describe('<DisplayName />', () => {
   });
 
   it('renders the username + account name if display name is empty', () => {
-    const account = Immutable.fromJS({
+    const account = fromJS({
       username: 'bar',
       acct: 'bar@baz',
       display_name: '',