diff --git a/Telegram/Resources/scheme.tl b/Telegram/Resources/scheme.tl
index 11323f5423..aab00c1123 100644
--- a/Telegram/Resources/scheme.tl
+++ b/Telegram/Resources/scheme.tl
@@ -463,7 +463,7 @@ upload.fileCdnRedirect#ea52fe5a dc_id:int file_token:bytes encryption_key:bytes
 
 dcOption#5d8c6cc flags:# ipv6:flags.0?true media_only:flags.1?true tcpo_only:flags.2?true cdn:flags.3?true static:flags.4?true id:int ip_address:string port:int = DcOption;
 
-config#9c840964 flags:# phonecalls_enabled:flags.1?true default_p2p_contacts:flags.3?true date:int expires:int test_mode:Bool this_dc:int dc_options:Vector<DcOption> chat_size_max:int megagroup_size_max:int forwarded_count_max:int online_update_period_ms:int offline_blur_timeout_ms:int offline_idle_timeout_ms:int online_cloud_timeout_ms:int notify_cloud_delay_ms:int notify_default_delay_ms:int chat_big_size:int push_chat_period_ms:int push_chat_limit:int saved_gifs_limit:int edit_time_limit:int rating_e_decay:int stickers_recent_limit:int stickers_faved_limit:int channels_read_media_period:int tmp_sessions:flags.0?int pinned_dialogs_count_max:int call_receive_timeout_ms:int call_ring_timeout_ms:int call_connect_timeout_ms:int call_packet_timeout_ms:int me_url_prefix:string suggested_lang_code:flags.2?string lang_pack_version:flags.2?int disabled_features:Vector<DisabledFeature> = Config;
+config#9c840964 flags:# phonecalls_enabled:flags.1?true default_p2p_contacts:flags.3?true preload_featured:flags.4?true date:int expires:int test_mode:Bool this_dc:int dc_options:Vector<DcOption> chat_size_max:int megagroup_size_max:int forwarded_count_max:int online_update_period_ms:int offline_blur_timeout_ms:int offline_idle_timeout_ms:int online_cloud_timeout_ms:int notify_cloud_delay_ms:int notify_default_delay_ms:int chat_big_size:int push_chat_period_ms:int push_chat_limit:int saved_gifs_limit:int edit_time_limit:int rating_e_decay:int stickers_recent_limit:int stickers_faved_limit:int channels_read_media_period:int tmp_sessions:flags.0?int pinned_dialogs_count_max:int call_receive_timeout_ms:int call_ring_timeout_ms:int call_connect_timeout_ms:int call_packet_timeout_ms:int me_url_prefix:string suggested_lang_code:flags.2?string lang_pack_version:flags.2?int disabled_features:Vector<DisabledFeature> = Config;
 
 nearestDc#8e1a1775 country:string this_dc:int nearest_dc:int = NearestDc;
 
@@ -607,7 +607,7 @@ inputStickerSetEmpty#ffb62b95 = InputStickerSet;
 inputStickerSetID#9de7a269 id:long access_hash:long = InputStickerSet;
 inputStickerSetShortName#861cc8a0 short_name:string = InputStickerSet;
 
-stickerSet#cd303b41 flags:# installed:flags.0?true archived:flags.1?true official:flags.2?true masks:flags.3?true id:long access_hash:long title:string short_name:string count:int hash:int = StickerSet;
+stickerSet#5585a139 flags:# archived:flags.1?true official:flags.2?true masks:flags.3?true installed_date:flags.0?int id:long access_hash:long title:string short_name:string count:int hash:int = StickerSet;
 
 messages.stickerSet#b60a24a6 set:StickerSet packs:Vector<StickerPack> documents:Vector<Document> = messages.StickerSet;
 
@@ -754,7 +754,7 @@ messages.featuredStickersNotModified#4ede3cf = messages.FeaturedStickers;
 messages.featuredStickers#f89d88e5 hash:int sets:Vector<StickerSetCovered> unread:Vector<long> = messages.FeaturedStickers;
 
 messages.recentStickersNotModified#b17f890 = messages.RecentStickers;
-messages.recentStickers#5ce20970 hash:int stickers:Vector<Document> = messages.RecentStickers;
+messages.recentStickers#22f3afb3 hash:int packs:Vector<StickerPack> stickers:Vector<Document> dates:Vector<int> = messages.RecentStickers;
 
 messages.archivedStickers#4fcba9c8 count:int sets:Vector<StickerSetCovered> = messages.ArchivedStickers;
 
@@ -956,6 +956,10 @@ inputDialogPeer#fcaafeb7 peer:InputPeer = InputDialogPeer;
 dialogPeerFeed#da429411 feed_id:int = DialogPeer;
 dialogPeer#e56dbf05 peer:Peer = DialogPeer;
 
+webAuthorization#cac943f2 hash:long bot_id:int domain:string browser:string platform:string date_created:int date_active:int ip:string region:string = WebAuthorization;
+
+account.webAuthorizations#ed56c9fc authorizations:Vector<WebAuthorization> users:Vector<User> = account.WebAuthorizations;
+
 ---functions---
 
 invokeAfterMsg#cb9f372d {X:Type} msg_id:long query:!X = X;
@@ -1009,6 +1013,9 @@ account.updatePasswordSettings#fa7c4b86 current_password_hash:bytes new_settings
 account.sendConfirmPhoneCode#1516d7bd flags:# allow_flashcall:flags.0?true hash:string current_number:flags.0?Bool = auth.SentCode;
 account.confirmPhone#5f2178c3 phone_code_hash:string phone_code:string = Bool;
 account.getTmpPassword#4a82327e password_hash:bytes period:int = account.TmpPassword;
+account.getWebAuthorizations#182e6d6f = account.WebAuthorizations;
+account.resetWebAuthorization#2d01b9ef hash:long = Bool;
+account.resetWebAuthorizations#682d2594 = Bool;
 
 users.getUsers#d91a548 id:Vector<InputUser> = Vector<User>;
 users.getFullUser#ca30a5b1 id:InputUser = UserFull;
@@ -1063,6 +1070,7 @@ messages.sendEncryptedService#32d439a4 peer:InputEncryptedChat random_id:long da
 messages.receivedQueue#55a5bb66 max_qts:int = Vector<long>;
 messages.reportEncryptedSpam#4b0c8c0f peer:InputEncryptedChat = Bool;
 messages.readMessageContents#36a73f77 id:Vector<int> = messages.AffectedMessages;
+messages.getStickers#85cb5182 flags:# exclude_featured:flags.0?true emoticon:string hash:string = messages.Stickers;
 messages.getAllStickers#1c9618b1 hash:int = messages.AllStickers;
 messages.getWebPagePreview#8b68b0cc flags:# message:string entities:flags.3?Vector<MessageEntity> = MessageMedia;
 messages.exportChatInvite#7d885289 chat_id:int = ExportedChatInvite;
diff --git a/Telegram/SourceFiles/apiwrap.cpp b/Telegram/SourceFiles/apiwrap.cpp
index 0410e5335b..1b7de76569 100644
--- a/Telegram/SourceFiles/apiwrap.cpp
+++ b/Telegram/SourceFiles/apiwrap.cpp
@@ -512,9 +512,13 @@ void ApiWrap::gotChatFull(PeerData *peer, const MTPmessages_ChatFull &result, mt
 			auto stickersChanged = (canEditStickers != channel->canEditStickers());
 			auto stickerSet = (f.has_stickerset() ? &f.vstickerset.c_stickerSet() : nullptr);
 			auto newSetId = (stickerSet ? stickerSet->vid.v : 0);
-			auto oldSetId = (channel->mgInfo->stickerSet.type() == mtpc_inputStickerSetID) ? channel->mgInfo->stickerSet.c_inputStickerSetID().vid.v : 0;
+			auto oldSetId = (channel->mgInfo->stickerSet.type() == mtpc_inputStickerSetID)
+				? channel->mgInfo->stickerSet.c_inputStickerSetID().vid.v
+				: 0;
 			if (oldSetId != newSetId) {
-				channel->mgInfo->stickerSet = stickerSet ? MTP_inputStickerSetID(stickerSet->vid, stickerSet->vaccess_hash) : MTP_inputStickerSetEmpty();
+				channel->mgInfo->stickerSet = stickerSet
+					? MTP_inputStickerSetID(stickerSet->vid, stickerSet->vaccess_hash)
+					: MTP_inputStickerSetEmpty();
 				stickersChanged = true;
 			}
 			if (stickersChanged) {
@@ -1131,7 +1135,9 @@ void ApiWrap::requestStickerSets() {
 	}
 }
 
-void ApiWrap::saveStickerSets(const Stickers::Order &localOrder, const Stickers::Order &localRemoved) {
+void ApiWrap::saveStickerSets(
+		const Stickers::Order &localOrder,
+		const Stickers::Order &localRemoved) {
 	for (auto requestId : base::take(_stickerSetDisenableRequests)) {
 		request(requestId).cancel();
 	}
@@ -1187,13 +1193,15 @@ void ApiWrap::saveStickerSets(const Stickers::Order &localOrder, const Stickers:
 
 				int removeIndex = _session->data().stickerSetsOrder().indexOf(it->id);
 				if (removeIndex >= 0) _session->data().stickerSetsOrderRef().removeAt(removeIndex);
-				if (!(it->flags & MTPDstickerSet_ClientFlag::f_featured) && !(it->flags & MTPDstickerSet_ClientFlag::f_special)) {
+				if (!(it->flags & MTPDstickerSet_ClientFlag::f_featured)
+					&& !(it->flags & MTPDstickerSet_ClientFlag::f_special)) {
 					sets.erase(it);
 				} else {
 					if (it->flags & MTPDstickerSet::Flag::f_archived) {
 						writeArchived = true;
 					}
-					it->flags &= ~(MTPDstickerSet::Flag::f_installed | MTPDstickerSet::Flag::f_archived);
+					it->flags &= ~(MTPDstickerSet::Flag::f_installed_date | MTPDstickerSet::Flag::f_archived);
+					it->installDate = TimeId(0);
 				}
 			}
 		}
@@ -1202,7 +1210,7 @@ void ApiWrap::saveStickerSets(const Stickers::Order &localOrder, const Stickers:
 	// Clear all installed flags, set only for sets from order.
 	for (auto &set : sets) {
 		if (!(set.flags & MTPDstickerSet::Flag::f_archived)) {
-			set.flags &= ~MTPDstickerSet::Flag::f_installed;
+			set.flags &= ~MTPDstickerSet::Flag::f_installed_date;
 		}
 	}
 
@@ -1226,12 +1234,15 @@ void ApiWrap::saveStickerSets(const Stickers::Order &localOrder, const Stickers:
 				writeArchived = true;
 			}
 			order.push_back(setId);
-			it->flags |= MTPDstickerSet::Flag::f_installed;
+			it->flags |= MTPDstickerSet::Flag::f_installed_date;
+			if (!it->installDate) {
+				it->installDate = unixtime();
+			}
 		}
 	}
 	for (auto it = sets.begin(); it != sets.cend();) {
 		if ((it->flags & MTPDstickerSet_ClientFlag::f_featured)
-			|| (it->flags & MTPDstickerSet::Flag::f_installed)
+			|| (it->flags & MTPDstickerSet::Flag::f_installed_date)
 			|| (it->flags & MTPDstickerSet::Flag::f_archived)
 			|| (it->flags & MTPDstickerSet_ClientFlag::f_special)) {
 			++it;
@@ -1892,7 +1903,10 @@ void ApiWrap::requestRecentStickers(TimeId now) {
 		|| _recentStickersUpdateRequest) {
 		return;
 	}
-	auto onDone = [this](const MTPmessages_RecentStickers &result) {
+	_recentStickersUpdateRequest = request(MTPmessages_GetRecentStickers(
+		MTP_flags(0),
+		MTP_int(Local::countRecentStickersHash())
+	)).done([=](const MTPmessages_RecentStickers &result) {
 		_session->data().setLastRecentStickersUpdate(getms(true));
 		_recentStickersUpdateRequest = 0;
 
@@ -1900,14 +1914,20 @@ void ApiWrap::requestRecentStickers(TimeId now) {
 		case mtpc_messages_recentStickersNotModified: return;
 		case mtpc_messages_recentStickers: {
 			auto &d = result.c_messages_recentStickers();
-			Stickers::SpecialSetReceived(Stickers::CloudRecentSetId, lang(lng_recent_stickers), d.vstickers.v, d.vhash.v);
+			Stickers::SpecialSetReceived(
+				Stickers::CloudRecentSetId,
+				lang(lng_recent_stickers),
+				d.vstickers.v,
+				d.vhash.v,
+				d.vpacks.v);
 		} return;
 		default: Unexpected("Type in ApiWrap::recentStickersDone()");
 		}
-	};
-	_recentStickersUpdateRequest = request(MTPmessages_GetRecentStickers(MTP_flags(0), MTP_int(Local::countRecentStickersHash()))).done(onDone).fail([this, onDone](const RPCError &error) {
+	}).fail([=](const RPCError &error) {
+		_session->data().setLastRecentStickersUpdate(getms(true));
+		_recentStickersUpdateRequest = 0;
+
 		LOG(("App Fail: Failed to get recent stickers!"));
-		onDone(MTP_messages_recentStickersNotModified());
 	}).send();
 }
 
@@ -1916,7 +1936,9 @@ void ApiWrap::requestFavedStickers(TimeId now) {
 		|| _favedStickersUpdateRequest) {
 		return;
 	}
-	auto onDone = [this](const MTPmessages_FavedStickers &result) {
+	_favedStickersUpdateRequest = request(MTPmessages_GetFavedStickers(
+		MTP_int(Local::countFavedStickersHash())
+	)).done([=](const MTPmessages_FavedStickers &result) {
 		_session->data().setLastFavedStickersUpdate(getms(true));
 		_favedStickersUpdateRequest = 0;
 
@@ -1924,14 +1946,20 @@ void ApiWrap::requestFavedStickers(TimeId now) {
 		case mtpc_messages_favedStickersNotModified: return;
 		case mtpc_messages_favedStickers: {
 			auto &d = result.c_messages_favedStickers();
-			Stickers::SpecialSetReceived(Stickers::FavedSetId, Lang::Hard::FavedSetTitle(), d.vstickers.v, d.vhash.v, d.vpacks.v);
+			Stickers::SpecialSetReceived(
+				Stickers::FavedSetId,
+				Lang::Hard::FavedSetTitle(),
+				d.vstickers.v,
+				d.vhash.v,
+				d.vpacks.v);
 		} return;
 		default: Unexpected("Type in ApiWrap::favedStickersDone()");
 		}
-	};
-	_favedStickersUpdateRequest = request(MTPmessages_GetFavedStickers(MTP_int(Local::countFavedStickersHash()))).done(onDone).fail([this, onDone](const RPCError &error) {
+	}).fail([=](const RPCError &error) {
+		_session->data().setLastFavedStickersUpdate(getms(true));
+		_favedStickersUpdateRequest = 0;
+
 		LOG(("App Fail: Failed to get faved stickers!"));
-		onDone(MTP_messages_favedStickersNotModified());
 	}).send();
 }
 
@@ -1940,7 +1968,9 @@ void ApiWrap::requestFeaturedStickers(TimeId now) {
 		|| _featuredStickersUpdateRequest) {
 		return;
 	}
-	auto onDone = [this](const MTPmessages_FeaturedStickers &result) {
+	_featuredStickersUpdateRequest = request(MTPmessages_GetFeaturedStickers(
+		MTP_int(Local::countFeaturedStickersHash())
+	)).done([=](const MTPmessages_FeaturedStickers &result) {
 		_session->data().setLastFeaturedStickersUpdate(getms(true));
 		_featuredStickersUpdateRequest = 0;
 
@@ -1952,10 +1982,11 @@ void ApiWrap::requestFeaturedStickers(TimeId now) {
 		} return;
 		default: Unexpected("Type in ApiWrap::featuredStickersDone()");
 		}
-	};
-	_featuredStickersUpdateRequest = request(MTPmessages_GetFeaturedStickers(MTP_int(Local::countFeaturedStickersHash()))).done(onDone).fail([this, onDone](const RPCError &error) {
+	}).fail([=](const RPCError &error) {
+		_session->data().setLastFeaturedStickersUpdate(getms(true));
+		_featuredStickersUpdateRequest = 0;
+
 		LOG(("App Fail: Failed to get featured stickers!"));
-		onDone(MTP_messages_featuredStickersNotModified());
 	}).send();
 }
 
@@ -1964,7 +1995,9 @@ void ApiWrap::requestSavedGifs(TimeId now) {
 		|| _savedGifsUpdateRequest) {
 		return;
 	}
-	auto onDone = [this](const MTPmessages_SavedGifs &result) {
+	_savedGifsUpdateRequest = request(MTPmessages_GetSavedGifs(
+		MTP_int(Local::countSavedGifsHash())
+	)).done([=](const MTPmessages_SavedGifs &result) {
 		_session->data().setLastSavedGifsUpdate(getms(true));
 		_savedGifsUpdateRequest = 0;
 
@@ -1976,10 +2009,11 @@ void ApiWrap::requestSavedGifs(TimeId now) {
 		} return;
 		default: Unexpected("Type in ApiWrap::savedGifsDone()");
 		}
-	};
-	_savedGifsUpdateRequest = request(MTPmessages_GetSavedGifs(MTP_int(Local::countSavedGifsHash()))).done(onDone).fail([this, onDone](const RPCError &error) {
+	}).fail([=](const RPCError &error) {
+		_session->data().setLastSavedGifsUpdate(getms(true));
+		_savedGifsUpdateRequest = 0;
+
 		LOG(("App Fail: Failed to get saved gifs!"));
-		onDone(MTP_messages_savedGifsNotModified());
 	}).send();
 }
 
diff --git a/Telegram/SourceFiles/boxes/sticker_set_box.cpp b/Telegram/SourceFiles/boxes/sticker_set_box.cpp
index c099e92940..03a3d2de82 100644
--- a/Telegram/SourceFiles/boxes/sticker_set_box.cpp
+++ b/Telegram/SourceFiles/boxes/sticker_set_box.cpp
@@ -156,12 +156,16 @@ void StickerSetBox::Inner::gotSet(const MTPmessages_StickerSet &set) {
 			_setCount = s.vcount.v;
 			_setHash = s.vhash.v;
 			_setFlags = s.vflags.v;
+			_setInstallDate = s.has_installed_date()
+				? s.vinstalled_date.v
+				: TimeId(0);
 			auto &sets = Auth().data().stickerSetsRef();
 			auto it = sets.find(_setId);
 			if (it != sets.cend()) {
 				auto clientFlags = it->flags & (MTPDstickerSet_ClientFlag::f_featured | MTPDstickerSet_ClientFlag::f_not_loaded | MTPDstickerSet_ClientFlag::f_unread | MTPDstickerSet_ClientFlag::f_special);
 				_setFlags |= clientFlags;
 				it->flags = _setFlags;
+				it->installDate = _setInstallDate;
 				it->stickers = _pack;
 				it->emoji = _emoji;
 			}
@@ -201,13 +205,25 @@ void StickerSetBox::Inner::installDone(const MTPmessages_StickerSetInstallResult
 			Auth().data().archivedStickerSetsOrderRef().removeAt(index);
 		}
 	}
+	_setInstallDate = unixtime();
 	_setFlags &= ~MTPDstickerSet::Flag::f_archived;
-	_setFlags |= MTPDstickerSet::Flag::f_installed;
+	_setFlags |= MTPDstickerSet::Flag::f_installed_date;
 	auto it = sets.find(_setId);
 	if (it == sets.cend()) {
-		it = sets.insert(_setId, Stickers::Set(_setId, _setAccess, _setTitle, _setShortName, _setCount, _setHash, _setFlags));
+		it = sets.insert(
+			_setId,
+			Stickers::Set(
+				_setId,
+				_setAccess,
+				_setTitle,
+				_setShortName,
+				_setCount,
+				_setHash,
+				_setFlags,
+				_setInstallDate));
 	} else {
 		it->flags = _setFlags;
+		it->installDate = _setInstallDate;
 	}
 	it->stickers = _pack;
 	it->emoji = _emoji;
@@ -396,11 +412,17 @@ bool StickerSetBox::Inner::loaded() const {
 	return _loaded && !_pack.isEmpty();
 }
 
-int32 StickerSetBox::Inner::notInstalled() const {
-	if (!_loaded) return 0;
-	auto it = Auth().data().stickerSets().constFind(_setId);
-	if (it == Auth().data().stickerSets().cend() || !(it->flags & MTPDstickerSet::Flag::f_installed) || (it->flags & MTPDstickerSet::Flag::f_archived)) return _pack.size();
-	return 0;
+bool StickerSetBox::Inner::notInstalled() const {
+	if (!_loaded) {
+		return false;
+	}
+	const auto it = Auth().data().stickerSets().constFind(_setId);
+	if ((it == Auth().data().stickerSets().cend())
+		|| !(it->flags & MTPDstickerSet::Flag::f_installed_date)
+		|| (it->flags & MTPDstickerSet::Flag::f_archived)) {
+		return _pack.size() > 0;
+	}
+	return false;
 }
 
 bool StickerSetBox::Inner::official() const {
diff --git a/Telegram/SourceFiles/boxes/sticker_set_box.h b/Telegram/SourceFiles/boxes/sticker_set_box.h
index 733bf1efe4..2917cbe6b3 100644
--- a/Telegram/SourceFiles/boxes/sticker_set_box.h
+++ b/Telegram/SourceFiles/boxes/sticker_set_box.h
@@ -50,7 +50,7 @@ public:
 	Inner(QWidget *parent, const MTPInputStickerSet &set);
 
 	bool loaded() const;
-	int32 notInstalled() const;
+	bool notInstalled() const;
 	bool official() const;
 	base::lambda<TextWithEntities()> title() const;
 	QString shortName() const;
@@ -98,9 +98,10 @@ private:
 	uint64 _setId = 0;
 	uint64 _setAccess = 0;
 	QString _setTitle, _setShortName;
-	int32 _setCount = 0;
+	int _setCount = 0;
 	int32 _setHash = 0;
 	MTPDstickerSet::Flags _setFlags = 0;
+	TimeId _setInstallDate = TimeId(0);
 
 	MTPInputStickerSet _input;
 
diff --git a/Telegram/SourceFiles/boxes/stickers_box.cpp b/Telegram/SourceFiles/boxes/stickers_box.cpp
index f7b765544a..9d943a5846 100644
--- a/Telegram/SourceFiles/boxes/stickers_box.cpp
+++ b/Telegram/SourceFiles/boxes/stickers_box.cpp
@@ -446,8 +446,14 @@ void StickersBox::installSet(uint64 setId) {
 		if (_featured.widget()) _featured.widget()->setRemovedSets(_localRemoved);
 		_archived.widget()->setRemovedSets(_localRemoved);
 	}
-	if (!(it->flags & MTPDstickerSet::Flag::f_installed) || (it->flags & MTPDstickerSet::Flag::f_archived)) {
-		MTP::send(MTPmessages_InstallStickerSet(Stickers::inputSetId(*it), MTP_boolFalse()), rpcDone(&StickersBox::installDone), rpcFail(&StickersBox::installFail, setId));
+	if (!(it->flags & MTPDstickerSet::Flag::f_installed_date)
+		|| (it->flags & MTPDstickerSet::Flag::f_archived)) {
+		MTP::send(
+			MTPmessages_InstallStickerSet(
+				Stickers::inputSetId(*it),
+				MTP_boolFalse()),
+			rpcDone(&StickersBox::installDone),
+			rpcFail(&StickersBox::installFail, setId));
 
 		Stickers::InstallLocally(setId);
 	}
@@ -455,7 +461,8 @@ void StickersBox::installSet(uint64 setId) {
 
 void StickersBox::installDone(const MTPmessages_StickerSetInstallResult &result) {
 	if (result.type() == mtpc_messages_stickerSetInstallResultArchive) {
-		Stickers::ApplyArchivedResult(result.c_messages_stickerSetInstallResultArchive());
+		Stickers::ApplyArchivedResult(
+			result.c_messages_stickerSetInstallResultArchive());
 	}
 }
 
@@ -1564,8 +1571,13 @@ QString StickersBox::Inner::fillSetTitle(const Stickers::Set &set, int maxNameWi
 	return result;
 }
 
-void StickersBox::Inner::fillSetFlags(const Stickers::Set &set, bool *outInstalled, bool *outOfficial, bool *outUnread, bool *outArchived) {
-	*outInstalled = (set.flags & MTPDstickerSet::Flag::f_installed);
+void StickersBox::Inner::fillSetFlags(
+		const Stickers::Set &set,
+		bool *outInstalled,
+		bool *outOfficial,
+		bool *outUnread,
+		bool *outArchived) {
+	*outInstalled = (set.flags & MTPDstickerSet::Flag::f_installed_date);
 	*outOfficial = (set.flags & MTPDstickerSet::Flag::f_official);
 	*outArchived = (set.flags & MTPDstickerSet::Flag::f_archived);
 	if (_section == Section::Featured) {
diff --git a/Telegram/SourceFiles/chat_helpers/stickers.cpp b/Telegram/SourceFiles/chat_helpers/stickers.cpp
index b5608f32bd..70acbadd3b 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers.cpp
+++ b/Telegram/SourceFiles/chat_helpers/stickers.cpp
@@ -79,15 +79,29 @@ void ApplyArchivedResult(const MTPDmessages_stickerSetInstallResultArchive &d) {
 bool ApplyArchivedResultFake() {
 	auto sets = QVector<MTPStickerSetCovered>();
 	for (auto &set : Auth().data().stickerSetsRef()) {
-		if ((set.flags & MTPDstickerSet::Flag::f_installed) && !(set.flags & MTPDstickerSet_ClientFlag::f_special)) {
+		if ((set.flags & MTPDstickerSet::Flag::f_installed_date)
+			&& !(set.flags & MTPDstickerSet_ClientFlag::f_special)) {
 			if (rand_value<uint32>() % 128 < 64) {
-				auto data = MTP_stickerSet(MTP_flags(set.flags | MTPDstickerSet::Flag::f_archived), MTP_long(set.id), MTP_long(set.access), MTP_string(set.title), MTP_string(set.shortName), MTP_int(set.count), MTP_int(set.hash));
-				sets.push_back(MTP_stickerSetCovered(data, MTP_documentEmpty(MTP_long(0))));
+				auto data = MTP_stickerSet(
+					MTP_flags(set.flags | MTPDstickerSet::Flag::f_archived),
+					MTP_int(set.installDate),
+					MTP_long(set.id),
+					MTP_long(set.access),
+					MTP_string(set.title),
+					MTP_string(set.shortName),
+					MTP_int(set.count),
+					MTP_int(set.hash));
+				sets.push_back(MTP_stickerSetCovered(
+					data,
+					MTP_documentEmpty(MTP_long(0))));
 			}
 		}
 	}
-	if (sets.size() > 3) sets = sets.mid(0, 3);
-	auto fakeResult = MTP_messages_stickerSetInstallResultArchive(MTP_vector<MTPStickerSetCovered>(sets));
+	if (sets.size() > 3) {
+		sets = sets.mid(0, 3);
+	}
+	auto fakeResult = MTP_messages_stickerSetInstallResultArchive(
+		MTP_vector<MTPStickerSetCovered>(sets));
 	ApplyArchivedResult(fakeResult.c_messages_stickerSetInstallResultArchive());
 	return true;
 }
@@ -101,7 +115,8 @@ void InstallLocally(uint64 setId) {
 
 	auto flags = it->flags;
 	it->flags &= ~(MTPDstickerSet::Flag::f_archived | MTPDstickerSet_ClientFlag::f_unread);
-	it->flags |= MTPDstickerSet::Flag::f_installed;
+	it->flags |= MTPDstickerSet::Flag::f_installed_date;
+	it->installDate = unixtime();
 	auto changedFlags = flags ^ it->flags;
 
 	auto &order = Auth().data().stickerSetsOrderRef();
@@ -124,7 +139,9 @@ void InstallLocally(uint64 setId) {
 		}
 	}
 	Local::writeInstalledStickers();
-	if (changedFlags & MTPDstickerSet_ClientFlag::f_unread) Local::writeFeaturedStickers();
+	if (changedFlags & MTPDstickerSet_ClientFlag::f_unread) {
+		Local::writeFeaturedStickers();
+	}
 	if (changedFlags & MTPDstickerSet::Flag::f_archived) {
 		auto index = Auth().data().archivedStickerSetsOrderRef().indexOf(setId);
 		if (index >= 0) {
@@ -142,7 +159,8 @@ void UndoInstallLocally(uint64 setId) {
 		return;
 	}
 
-	it->flags &= ~MTPDstickerSet::Flag::f_installed;
+	it->flags &= ~MTPDstickerSet::Flag::f_installed_date;
+	it->installDate = TimeId(0);
 
 	auto &order = Auth().data().stickerSetsOrderRef();
 	int currentIndex = order.indexOf(setId);
@@ -217,7 +235,15 @@ void SetIsFaved(not_null<DocumentData*> document, base::optional<std::vector<not
 	auto &sets = Auth().data().stickerSetsRef();
 	auto it = sets.find(FavedSetId);
 	if (it == sets.end()) {
-		it = sets.insert(FavedSetId, Set(FavedSetId, 0, Lang::Hard::FavedSetTitle(), QString(), 0, 0, MTPDstickerSet_ClientFlag::f_special | 0));
+		it = sets.insert(FavedSetId, Set(
+			FavedSetId,
+			uint64(0),
+			Lang::Hard::FavedSetTitle(),
+			QString(),
+			0, // count
+			0, // hash
+			MTPDstickerSet_ClientFlag::f_special | 0,
+			TimeId(0)));
 	}
 	auto index = it->stickers.indexOf(document);
 	if (index == 0) {
@@ -321,7 +347,9 @@ void SetsReceived(const QVector<MTPStickerSet> &data, int32 hash) {
 	QMap<uint64, uint64> setsToRequest;
 	for (auto &set : sets) {
 		if (!(set.flags & MTPDstickerSet::Flag::f_archived)) {
-			set.flags &= ~MTPDstickerSet::Flag::f_installed; // mark for removing
+			// Mark for removing.
+			set.flags &= ~MTPDstickerSet::Flag::f_installed_date;
+			set.installDate = 0;
 		}
 	}
 	for_const (auto &setData, data) {
@@ -338,7 +366,7 @@ void SetsReceived(const QVector<MTPStickerSet> &data, int32 hash) {
 	auto writeRecent = false;
 	auto &recent = GetRecentPack();
 	for (auto it = sets.begin(), e = sets.end(); it != e;) {
-		bool installed = (it->flags & MTPDstickerSet::Flag::f_installed);
+		bool installed = (it->flags & MTPDstickerSet::Flag::f_installed_date);
 		bool featured = (it->flags & MTPDstickerSet_ClientFlag::f_featured);
 		bool special = (it->flags & MTPDstickerSet_ClientFlag::f_special);
 		bool archived = (it->flags & MTPDstickerSet::Flag::f_archived);
@@ -400,7 +428,12 @@ void SetPackAndEmoji(Set &set, Pack &&pack, const QVector<MTPStickerPack> &packs
 	}
 }
 
-void SpecialSetReceived(uint64 setId, const QString &setTitle, const QVector<MTPDocument> &items, int32 hash, const QVector<MTPStickerPack> &packs) {
+void SpecialSetReceived(
+		uint64 setId,
+		const QString &setTitle,
+		const QVector<MTPDocument> &items,
+		int32 hash,
+		const QVector<MTPStickerPack> &packs) {
 	auto &sets = Auth().data().stickerSetsRef();
 	auto it = sets.find(setId);
 
@@ -411,7 +444,15 @@ void SpecialSetReceived(uint64 setId, const QString &setTitle, const QVector<MTP
 		}
 	} else {
 		if (it == sets.cend()) {
-			it = sets.insert(setId, Set(setId, 0, setTitle, QString(), 0, 0, MTPDstickerSet_ClientFlag::f_special | 0));
+			it = sets.insert(setId, Set(
+				setId,
+				uint64(0),
+				setTitle,
+				QString(),
+				0, // count
+				0, // hash
+				MTPDstickerSet_ClientFlag::f_special | 0,
+				TimeId(0)));
 		} else {
 			it->title = setTitle;
 		}
@@ -512,13 +553,24 @@ void FeaturedSetsReceived(const QVector<MTPStickerSetCovered> &data, const QVect
 
 		if (set) {
 			auto it = sets.find(set->vid.v);
-			auto title = GetSetTitle(*set);
+			const auto title = GetSetTitle(*set);
+			const auto installDate = set->has_installed_date()
+				? set->vinstalled_date.v
+				: TimeId(0);
 			if (it == sets.cend()) {
 				auto setClientFlags = MTPDstickerSet_ClientFlag::f_featured | MTPDstickerSet_ClientFlag::f_not_loaded;
 				if (unreadMap.contains(set->vid.v)) {
 					setClientFlags |= MTPDstickerSet_ClientFlag::f_unread;
 				}
-				it = sets.insert(set->vid.v, Set(set->vid.v, set->vaccess_hash.v, title, qs(set->vshort_name), set->vcount.v, set->vhash.v, set->vflags.v | setClientFlags));
+				it = sets.insert(set->vid.v, Set(
+					set->vid.v,
+					set->vaccess_hash.v,
+					title,
+					qs(set->vshort_name),
+					set->vcount.v,
+					set->vhash.v,
+					set->vflags.v | setClientFlags,
+					installDate));
 			} else {
 				it->access = set->vaccess_hash.v;
 				it->title = title;
@@ -526,6 +578,7 @@ void FeaturedSetsReceived(const QVector<MTPStickerSetCovered> &data, const QVect
 				auto clientFlags = it->flags & (MTPDstickerSet_ClientFlag::f_featured | MTPDstickerSet_ClientFlag::f_unread | MTPDstickerSet_ClientFlag::f_not_loaded | MTPDstickerSet_ClientFlag::f_special);
 				it->flags = set->vflags.v | clientFlags;
 				it->flags |= MTPDstickerSet_ClientFlag::f_featured;
+				it->installDate = installDate;
 				if (unreadMap.contains(it->id)) {
 					it->flags |= MTPDstickerSet_ClientFlag::f_unread;
 				} else {
@@ -546,7 +599,7 @@ void FeaturedSetsReceived(const QVector<MTPStickerSetCovered> &data, const QVect
 
 	auto unreadCount = 0;
 	for (auto it = sets.begin(), e = sets.end(); it != e;) {
-		bool installed = (it->flags & MTPDstickerSet::Flag::f_installed);
+		bool installed = (it->flags & MTPDstickerSet::Flag::f_installed_date);
 		bool featured = (it->flags & MTPDstickerSet_ClientFlag::f_featured);
 		bool special = (it->flags & MTPDstickerSet_ClientFlag::f_special);
 		bool archived = (it->flags & MTPDstickerSet::Flag::f_archived);
@@ -677,7 +730,15 @@ Set *FeedSet(const MTPDstickerSet &set) {
 	auto title = GetSetTitle(set);
 	auto flags = MTPDstickerSet::Flags(0);
 	if (it == sets.cend()) {
-		it = sets.insert(set.vid.v, Stickers::Set(set.vid.v, set.vaccess_hash.v, title, qs(set.vshort_name), set.vcount.v, set.vhash.v, set.vflags.v | MTPDstickerSet_ClientFlag::f_not_loaded));
+		it = sets.insert(set.vid.v, Stickers::Set(
+			set.vid.v,
+			set.vaccess_hash.v,
+			title,
+			qs(set.vshort_name),
+			set.vcount.v,
+			set.vhash.v,
+			set.vflags.v | MTPDstickerSet_ClientFlag::f_not_loaded,
+			set.has_installed_date() ? set.vinstalled_date.v : TimeId(0)));
 	} else {
 		it->access = set.vaccess_hash.v;
 		it->title = title;
@@ -685,7 +746,12 @@ Set *FeedSet(const MTPDstickerSet &set) {
 		flags = it->flags;
 		auto clientFlags = it->flags & (MTPDstickerSet_ClientFlag::f_featured | MTPDstickerSet_ClientFlag::f_unread | MTPDstickerSet_ClientFlag::f_not_loaded | MTPDstickerSet_ClientFlag::f_special);
 		it->flags = set.vflags.v | clientFlags;
-		if (it->count != set.vcount.v || it->hash != set.vhash.v || it->emoji.isEmpty()) {
+		it->installDate = set.has_installed_date()
+			? set.vinstalled_date.v
+			: TimeId(0);
+		if (it->count != set.vcount.v
+			|| it->hash != set.vhash.v
+			|| it->emoji.isEmpty()) {
 			it->count = set.vcount.v;
 			it->hash = set.vhash.v;
 			it->flags |= MTPDstickerSet_ClientFlag::f_not_loaded; // need to request this set
@@ -782,7 +848,7 @@ Set *FeedSetFull(const MTPmessages_StickerSet &data) {
 	}
 
 	if (set) {
-		if (set->flags & MTPDstickerSet::Flag::f_installed) {
+		if (set->flags & MTPDstickerSet::Flag::f_installed_date) {
 			if (!(set->flags & MTPDstickerSet::Flag::f_archived)) {
 				Local::writeInstalledStickers();
 			}
diff --git a/Telegram/SourceFiles/chat_helpers/stickers.h b/Telegram/SourceFiles/chat_helpers/stickers.h
index f3f4bff2e7..89ce9a6a5f 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers.h
+++ b/Telegram/SourceFiles/chat_helpers/stickers.h
@@ -26,19 +26,31 @@ using Pack = QVector<DocumentData*>;
 using ByEmojiMap = QMap<EmojiPtr, Pack>;
 
 struct Set {
-	Set(uint64 id, uint64 access, const QString &title, const QString &shortName, int32 count, int32 hash, MTPDstickerSet::Flags flags)
-		: id(id)
-		, access(access)
-		, title(title)
-		, shortName(shortName)
-		, count(count)
-		, hash(hash)
-		, flags(flags) {
+	Set(
+		uint64 id,
+		uint64 access,
+		const QString &title,
+		const QString &shortName,
+		int count,
+		int32 hash,
+		MTPDstickerSet::Flags flags,
+		TimeId installDate)
+	: id(id)
+	, access(access)
+	, title(title)
+	, shortName(shortName)
+	, count(count)
+	, hash(hash)
+	, flags(flags)
+	, installDate(installDate) {
 	}
-	uint64 id, access;
+	uint64 id = 0;
+	uint64 access = 0;
 	QString title, shortName;
-	int32 count, hash;
+	int count = 0;
+	int32 hash = 0;
 	MTPDstickerSet::Flags flags;
+	TimeId installDate = 0;
 	Pack stickers;
 	ByEmojiMap emoji;
 };
@@ -59,8 +71,16 @@ bool IsFaved(not_null<DocumentData*> document);
 void SetFaved(not_null<DocumentData*> document, bool faved);
 
 void SetsReceived(const QVector<MTPStickerSet> &data, int32 hash);
-void SpecialSetReceived(uint64 setId, const QString &setTitle, const QVector<MTPDocument> &items, int32 hash, const QVector<MTPStickerPack> &packs = QVector<MTPStickerPack>());
-void FeaturedSetsReceived(const QVector<MTPStickerSetCovered> &data, const QVector<MTPlong> &unread, int32 hash);
+void SpecialSetReceived(
+	uint64 setId,
+	const QString &setTitle,
+	const QVector<MTPDocument> &items,
+	int32 hash,
+	const QVector<MTPStickerPack> &packs = QVector<MTPStickerPack>());
+void FeaturedSetsReceived(
+	const QVector<MTPStickerSetCovered> &data,
+	const QVector<MTPlong> &unread,
+	int32 hash);
 void GifsReceived(const QVector<MTPDocument> &items, int32 hash);
 
 Pack GetListByEmoji(not_null<EmojiPtr> emoji);
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
index ec912821cd..dc915302ba 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
@@ -914,7 +914,8 @@ bool StickersListWidget::featuredHasAddButton(int index) const {
 		return false;
 	}
 	auto flags = _featuredSets[index].flags;
-	return !(flags & MTPDstickerSet::Flag::f_installed) || (flags & MTPDstickerSet::Flag::f_archived);
+	return !(flags & MTPDstickerSet::Flag::f_installed_date)
+		|| (flags & MTPDstickerSet::Flag::f_archived);
 }
 
 QRect StickersListWidget::featuredAddRect(int index) const {
@@ -1295,15 +1296,27 @@ void StickersListWidget::appendSet(
 		AppendSkip skip) {
 	auto &sets = Auth().data().stickerSets();
 	auto it = sets.constFind(setId);
-	if (it == sets.cend() || it->stickers.isEmpty()) return;
-	if ((skip == AppendSkip::Archived) && (it->flags & MTPDstickerSet::Flag::f_archived)) return;
-	if ((skip == AppendSkip::Installed) && (it->flags & MTPDstickerSet::Flag::f_installed) && !(it->flags & MTPDstickerSet::Flag::f_archived)) {
+	if (it == sets.cend() || it->stickers.isEmpty()) {
+		return;
+	}
+	if ((skip == AppendSkip::Archived)
+		&& (it->flags & MTPDstickerSet::Flag::f_archived)) {
+		return;
+	}
+	if ((skip == AppendSkip::Installed)
+		&& (it->flags & MTPDstickerSet::Flag::f_installed_date)
+		&& !(it->flags & MTPDstickerSet::Flag::f_archived)) {
 		if (!_installedLocallySets.contains(setId)) {
 			return;
 		}
 	}
 
-	to.push_back(Set(it->id, it->flags, it->title, it->stickers.size() + 1, it->stickers));
+	to.push_back(Set(
+		it->id,
+		it->flags,
+		it->title,
+		it->stickers.size() + 1,
+		it->stickers));
 }
 
 void StickersListWidget::refreshRecent() {
@@ -1417,7 +1430,7 @@ void StickersListWidget::refreshMegagroupStickers(GroupStickersPlace place) {
 		auto &sets = Auth().data().stickerSets();
 		auto it = sets.constFind(set.vid.v);
 		if (it != sets.cend()) {
-			auto isInstalled = (it->flags & MTPDstickerSet::Flag::f_installed)
+			auto isInstalled = (it->flags & MTPDstickerSet::Flag::f_installed_date)
 				&& !(it->flags & MTPDstickerSet::Flag::f_archived);
 			if (isInstalled && !canEdit) {
 				removeHiddenForGroup();
@@ -1800,8 +1813,10 @@ void StickersListWidget::removeSet(uint64 setId) {
 						++i;
 					}
 				}
-				it->flags &= ~MTPDstickerSet::Flag::f_installed;
-				if (!(it->flags & MTPDstickerSet_ClientFlag::f_featured) && !(it->flags & MTPDstickerSet_ClientFlag::f_special)) {
+				it->flags &= ~MTPDstickerSet::Flag::f_installed_date;
+				it->installDate = TimeId(0);
+				if (!(it->flags & MTPDstickerSet_ClientFlag::f_featured)
+					&& !(it->flags & MTPDstickerSet_ClientFlag::f_special)) {
 					sets.erase(it);
 				}
 				int removeIndex = Auth().data().stickerSetsOrder().indexOf(_removingSetId);
diff --git a/Telegram/SourceFiles/data/data_document.cpp b/Telegram/SourceFiles/data/data_document.cpp
index 999bf5961b..3afdd21e2d 100644
--- a/Telegram/SourceFiles/data/data_document.cpp
+++ b/Telegram/SourceFiles/data/data_document.cpp
@@ -155,14 +155,18 @@ QString saveFileName(const QString &title, const QString &filter, const QString
 bool StickerData::setInstalled() const {
 	switch (set.type()) {
 	case mtpc_inputStickerSetID: {
-		auto it = Auth().data().stickerSets().constFind(set.c_inputStickerSetID().vid.v);
-		return (it != Auth().data().stickerSets().cend()) && !(it->flags & MTPDstickerSet::Flag::f_archived) && (it->flags & MTPDstickerSet::Flag::f_installed);
+		auto it = Auth().data().stickerSets().constFind(
+			set.c_inputStickerSetID().vid.v);
+		return (it != Auth().data().stickerSets().cend())
+			&& !(it->flags & MTPDstickerSet::Flag::f_archived)
+			&& (it->flags & MTPDstickerSet::Flag::f_installed_date);
 	} break;
 	case mtpc_inputStickerSetShortName: {
 		auto name = qs(set.c_inputStickerSetShortName().vshort_name).toLower();
 		for (auto it = Auth().data().stickerSets().cbegin(), e = Auth().data().stickerSets().cend(); it != e; ++it) {
 			if (it->shortName.toLower() == name) {
-				return !(it->flags & MTPDstickerSet::Flag::f_archived) && (it->flags & MTPDstickerSet::Flag::f_installed);
+				return !(it->flags & MTPDstickerSet::Flag::f_archived)
+					&& (it->flags & MTPDstickerSet::Flag::f_installed_date);
 			}
 		}
 	} break;
diff --git a/Telegram/SourceFiles/mainwidget.cpp b/Telegram/SourceFiles/mainwidget.cpp
index 4d33a20e57..3b3436f3cb 100644
--- a/Telegram/SourceFiles/mainwidget.cpp
+++ b/Telegram/SourceFiles/mainwidget.cpp
@@ -4241,7 +4241,15 @@ void MainWidget::incrementSticker(DocumentData *sticker) {
 	auto it = sets.find(Stickers::CloudRecentSetId);
 	if (it == sets.cend()) {
 		if (it == sets.cend()) {
-			it = sets.insert(Stickers::CloudRecentSetId, Stickers::Set(Stickers::CloudRecentSetId, 0, lang(lng_recent_stickers), QString(), 0, 0, MTPDstickerSet_ClientFlag::f_special | 0));
+			it = sets.insert(Stickers::CloudRecentSetId, Stickers::Set(
+				Stickers::CloudRecentSetId,
+				uint64(0),
+				lang(lng_recent_stickers),
+				QString(),
+				0, // count
+				0, // hash
+				MTPDstickerSet_ClientFlag::f_special | 0,
+				TimeId(0)));
 		} else {
 			it->title = lang(lng_recent_stickers);
 		}
@@ -5270,13 +5278,28 @@ void MainWidget::feedUpdate(const MTPUpdate &update) {
 			auto &set = d.vstickerset.c_messages_stickerSet();
 			if (set.vset.type() == mtpc_stickerSet) {
 				auto &s = set.vset.c_stickerSet();
+				if (!s.has_installed_date()) {
+					LOG(("API Error: "
+						"updateNewStickerSet without install_date flag."));
+				}
 				if (!s.is_masks()) {
 					auto &sets = Auth().data().stickerSetsRef();
 					auto it = sets.find(s.vid.v);
 					if (it == sets.cend()) {
-						it = sets.insert(s.vid.v, Stickers::Set(s.vid.v, s.vaccess_hash.v, Stickers::GetSetTitle(s), qs(s.vshort_name), s.vcount.v, s.vhash.v, s.vflags.v | MTPDstickerSet::Flag::f_installed));
+						it = sets.insert(s.vid.v, Stickers::Set(
+							s.vid.v,
+							s.vaccess_hash.v,
+							Stickers::GetSetTitle(s),
+							qs(s.vshort_name),
+							s.vcount.v,
+							s.vhash.v,
+							s.vflags.v | MTPDstickerSet::Flag::f_installed_date,
+							s.has_installed_date() ? s.vinstalled_date.v : unixtime()));
 					} else {
-						it->flags |= MTPDstickerSet::Flag::f_installed;
+						it->flags |= MTPDstickerSet::Flag::f_installed_date;
+						if (!it->installDate) {
+							it->installDate = unixtime();
+						}
 						if (it->flags & MTPDstickerSet::Flag::f_archived) {
 							it->flags &= ~MTPDstickerSet::Flag::f_archived;
 							writeArchived = true;
diff --git a/Telegram/SourceFiles/storage/localstorage.cpp b/Telegram/SourceFiles/storage/localstorage.cpp
index d8d67db182..f4d85d8b9f 100644
--- a/Telegram/SourceFiles/storage/localstorage.cpp
+++ b/Telegram/SourceFiles/storage/localstorage.cpp
@@ -36,6 +36,7 @@ namespace {
 
 constexpr auto kThemeFileSizeLimit = 5 * 1024 * 1024;
 constexpr auto kFileLoaderQueueStopTimeout = TimeMs(5000);
+constexpr auto kDefaultStickerInstallDate = TimeId(1);
 
 using FileKey = quint64;
 
@@ -3185,13 +3186,33 @@ void cancelTask(TaskId id) {
 void _writeStickerSet(QDataStream &stream, const Stickers::Set &set) {
 	bool notLoaded = (set.flags & MTPDstickerSet_ClientFlag::f_not_loaded);
 	if (notLoaded) {
-		stream << quint64(set.id) << quint64(set.access) << set.title << set.shortName << qint32(-set.count) << qint32(set.hash) << qint32(set.flags);
+		stream
+			<< quint64(set.id)
+			<< quint64(set.access)
+			<< set.title
+			<< set.shortName
+			<< qint32(-set.count)
+			<< qint32(set.hash)
+			<< qint32(set.flags);
+		if (AppVersion > 1002008) {
+			stream << qint32(set.installDate);
+		}
 		return;
 	} else {
 		if (set.stickers.isEmpty()) return;
 	}
 
-	stream << quint64(set.id) << quint64(set.access) << set.title << set.shortName << qint32(set.stickers.size()) << qint32(set.hash) << qint32(set.flags);
+	stream
+		<< quint64(set.id)
+		<< quint64(set.access)
+		<< set.title
+		<< set.shortName
+		<< qint32(set.stickers.size())
+		<< qint32(set.hash)
+		<< qint32(set.flags);
+	if (AppVersion > 1002008) {
+		stream << qint32(set.installDate);
+	}
 	for (auto j = set.stickers.cbegin(), e = set.stickers.cend(); j != e; ++j) {
 		Serialize::Document::writeToStream(stream, *j);
 	}
@@ -3241,8 +3262,8 @@ void _writeStickerSets(FileKey &stickersKey, CheckSet checkSet, const Stickers::
 			continue;
 		}
 
-		// id + access + title + shortName + stickersCount + hash + flags
-		size += sizeof(quint64) * 2 + Serialize::stringSize(set.title) + Serialize::stringSize(set.shortName) + sizeof(quint32) + sizeof(qint32) * 2;
+		// id + access + title + shortName + stickersCount + hash + flags + installDate
+		size += sizeof(quint64) * 2 + Serialize::stringSize(set.title) + Serialize::stringSize(set.shortName) + sizeof(quint32) + sizeof(qint32) * 3;
 		for_const (auto &sticker, set.stickers) {
 			size += Serialize::Document::sizeInStream(sticker);
 		}
@@ -3296,7 +3317,7 @@ void _readStickerSets(FileKey &stickersKey, Stickers::Order *outOrder = nullptr,
 		return;
 	}
 
-	bool readingInstalled = (readingFlags == MTPDstickerSet::Flag::f_installed);
+	bool readingInstalled = (readingFlags == MTPDstickerSet::Flag::f_installed_date);
 
 	auto &sets = Auth().data().stickerSetsRef();
 	if (outOrder) outOrder->clear();
@@ -3311,7 +3332,14 @@ void _readStickerSets(FileKey &stickersKey, Stickers::Order *outOrder = nullptr,
 		quint64 setId = 0, setAccess = 0;
 		QString setTitle, setShortName;
 		qint32 scnt = 0;
-		stickers.stream >> setId >> setAccess >> setTitle >> setShortName >> scnt;
+		auto setInstallDate = qint32(0);
+
+		stickers.stream
+			>> setId
+			>> setAccess
+			>> setTitle
+			>> setShortName
+			>> scnt;
 
 		qint32 setHash = 0;
 		MTPDstickerSet::Flags setFlags = 0;
@@ -3324,8 +3352,11 @@ void _readStickerSets(FileKey &stickersKey, Stickers::Order *outOrder = nullptr,
 				setFlags |= MTPDstickerSet_ClientFlag::f_not_loaded;
 			}
 		}
+		if (stickers.version > 1002008) {
+			stickers.stream >> setInstallDate;
+		}
 		if (readingInstalled && stickers.version < 9061) {
-			setFlags |= MTPDstickerSet::Flag::f_installed;
+			setFlags |= MTPDstickerSet::Flag::f_installed_date;
 		}
 
 		if (setId == Stickers::DefaultSetId) {
@@ -3354,8 +3385,16 @@ void _readStickerSets(FileKey &stickersKey, Stickers::Order *outOrder = nullptr,
 		auto it = sets.find(setId);
 		if (it == sets.cend()) {
 			// We will set this flags from order lists when reading those stickers.
-			setFlags &= ~(MTPDstickerSet::Flag::f_installed | MTPDstickerSet_ClientFlag::f_featured);
-			it = sets.insert(setId, Stickers::Set(setId, setAccess, setTitle, setShortName, 0, setHash, MTPDstickerSet::Flags(setFlags)));
+			setFlags &= ~(MTPDstickerSet::Flag::f_installed_date | MTPDstickerSet_ClientFlag::f_featured);
+			it = sets.insert(setId, Stickers::Set(
+				setId,
+				setAccess,
+				setTitle,
+				setShortName,
+				0,
+				setHash,
+				MTPDstickerSet::Flags(setFlags),
+				setInstallDate));
 		}
 		auto &set = it.value();
 		auto inputSet = MTP_inputStickerSetID(MTP_long(set.id), MTP_long(set.access));
@@ -3431,6 +3470,9 @@ void _readStickerSets(FileKey &stickersKey, Stickers::Order *outOrder = nullptr,
 			auto it = sets.find(setId);
 			if (it != sets.cend()) {
 				it->flags |= readingFlags;
+				if (readingInstalled && !it->installDate) {
+					it->installDate = kDefaultStickerInstallDate;
+				}
 			}
 		}
 	}
@@ -3446,7 +3488,7 @@ void writeInstalledStickers() {
 			if (set.stickers.isEmpty()) { // all other special are "installed"
 				return StickerSetCheckResult::Skip;
 			}
-		} else if (!(set.flags & MTPDstickerSet::Flag::f_installed) || (set.flags & MTPDstickerSet::Flag::f_archived)) {
+		} else if (!(set.flags & MTPDstickerSet::Flag::f_installed_date) || (set.flags & MTPDstickerSet::Flag::f_archived)) {
 			return StickerSetCheckResult::Skip;
 		} else if (set.flags & MTPDstickerSet_ClientFlag::f_not_loaded) { // waiting to receive
 			return StickerSetCheckResult::Abort;
@@ -3529,8 +3571,27 @@ void importOldRecentStickers() {
 	auto &recent = cRefRecentStickers();
 	recent.clear();
 
-	auto &def = sets.insert(Stickers::DefaultSetId, Stickers::Set(Stickers::DefaultSetId, 0, lang(lng_stickers_default_set), QString(), 0, 0, MTPDstickerSet::Flag::f_official | MTPDstickerSet::Flag::f_installed | MTPDstickerSet_ClientFlag::f_special)).value();
-	auto &custom = sets.insert(Stickers::CustomSetId, Stickers::Set(Stickers::CustomSetId, 0, qsl("Custom stickers"), QString(), 0, 0, MTPDstickerSet::Flag::f_installed | MTPDstickerSet_ClientFlag::f_special)).value();
+	auto &def = sets.insert(Stickers::DefaultSetId, Stickers::Set(
+		Stickers::DefaultSetId,
+		uint64(0),
+		lang(lng_stickers_default_set),
+		QString(),
+		0, // count
+		0, // hash
+		(MTPDstickerSet::Flag::f_official
+			| MTPDstickerSet::Flag::f_installed_date
+			| MTPDstickerSet_ClientFlag::f_special),
+		kDefaultStickerInstallDate)).value();
+	auto &custom = sets.insert(Stickers::CustomSetId, Stickers::Set(
+		Stickers::CustomSetId,
+		uint64(0),
+		qsl("Custom stickers"),
+		QString(),
+		0, // count
+		0, // hash
+		(MTPDstickerSet::Flag::f_installed_date
+			| MTPDstickerSet_ClientFlag::f_special),
+		kDefaultStickerInstallDate)).value();
 
 	QMap<uint64, bool> read;
 	while (!stickers.stream.atEnd()) {
@@ -3601,11 +3662,17 @@ void readInstalledStickers() {
 	}
 
 	Auth().data().stickerSetsRef().clear();
-	_readStickerSets(_installedStickersKey, &Auth().data().stickerSetsOrderRef(), MTPDstickerSet::Flag::f_installed);
+	_readStickerSets(
+		_installedStickersKey,
+		&Auth().data().stickerSetsOrderRef(),
+		MTPDstickerSet::Flag::f_installed_date);
 }
 
 void readFeaturedStickers() {
-	_readStickerSets(_featuredStickersKey, &Auth().data().featuredStickerSetsOrderRef(), MTPDstickerSet::Flags() | MTPDstickerSet_ClientFlag::f_featured);
+	_readStickerSets(
+		_featuredStickersKey,
+		&Auth().data().featuredStickerSetsOrderRef(),
+		MTPDstickerSet::Flags() | MTPDstickerSet_ClientFlag::f_featured);
 
 	auto &sets = Auth().data().stickerSets();
 	int unreadCount = 0;