diff --git a/.eslintrc.json b/.eslintrc.json
index accbe31e72..e29c6e5a6f 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -109,7 +109,6 @@
                 "UserSearch": false,
                 "WinChan": false,
                 "XDate": false,
-                "_": false,
                 "activity": false,
                 "admin": false,
                 "alert_words": false,
diff --git a/frontend_tests/node_tests/buddy_data.js b/frontend_tests/node_tests/buddy_data.js
index 7f6a08ef89..01b761ec8c 100644
--- a/frontend_tests/node_tests/buddy_data.js
+++ b/frontend_tests/node_tests/buddy_data.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const _page_params = {};
 
 set_global("page_params", _page_params);
diff --git a/frontend_tests/node_tests/buddy_list.js b/frontend_tests/node_tests/buddy_list.js
index 4aaff353ec..c394c986b2 100644
--- a/frontend_tests/node_tests/buddy_list.js
+++ b/frontend_tests/node_tests/buddy_list.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 set_global("$", global.make_zjquery());
 zrequire("people");
 zrequire("buddy_data");
diff --git a/frontend_tests/node_tests/channel.js b/frontend_tests/node_tests/channel.js
index b7435c0712..b8bb5ef39d 100644
--- a/frontend_tests/node_tests/channel.js
+++ b/frontend_tests/node_tests/channel.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 set_global("$", {});
 
 set_global("reload", {});
diff --git a/frontend_tests/node_tests/components.js b/frontend_tests/node_tests/components.js
index 164c07ef2c..18b82a5799 100644
--- a/frontend_tests/node_tests/components.js
+++ b/frontend_tests/node_tests/components.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 zrequire("keydown_util");
 zrequire("components");
 
diff --git a/frontend_tests/node_tests/emoji_picker.js b/frontend_tests/node_tests/emoji_picker.js
index 6e7ddadd5a..7b7e4c8600 100644
--- a/frontend_tests/node_tests/emoji_picker.js
+++ b/frontend_tests/node_tests/emoji_picker.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const emoji = zrequire("emoji", "shared/js/emoji");
 zrequire("emoji_picker");
 
diff --git a/frontend_tests/node_tests/message_fetch.js b/frontend_tests/node_tests/message_fetch.js
index c334dc84cf..13bb9081bf 100644
--- a/frontend_tests/node_tests/message_fetch.js
+++ b/frontend_tests/node_tests/message_fetch.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 set_global("$", global.make_zjquery());
 set_global("document", "document-stub");
 
diff --git a/frontend_tests/node_tests/message_list_view.js b/frontend_tests/node_tests/message_list_view.js
index 858f6fc09d..0c4bb320b2 100644
--- a/frontend_tests/node_tests/message_list_view.js
+++ b/frontend_tests/node_tests/message_list_view.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 set_global("$", global.make_zjquery());
 set_global("document", "document-stub");
 
diff --git a/frontend_tests/node_tests/people.js b/frontend_tests/node_tests/people.js
index 2a1bcdddbb..9c022d72b0 100644
--- a/frontend_tests/node_tests/people.js
+++ b/frontend_tests/node_tests/people.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 zrequire("people");
 set_global("message_store", {});
 set_global("page_params", {});
diff --git a/frontend_tests/node_tests/settings_user_groups.js b/frontend_tests/node_tests/settings_user_groups.js
index 55ededb465..4f9953c336 100644
--- a/frontend_tests/node_tests/settings_user_groups.js
+++ b/frontend_tests/node_tests/settings_user_groups.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 zrequire("user_pill");
 zrequire("settings_user_groups");
 
diff --git a/frontend_tests/node_tests/stream_data.js b/frontend_tests/node_tests/stream_data.js
index 214952fb8a..f35f227937 100644
--- a/frontend_tests/node_tests/stream_data.js
+++ b/frontend_tests/node_tests/stream_data.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 set_global("page_params", {
     is_admin: false,
     realm_users: [],
diff --git a/frontend_tests/node_tests/topic_list_data.js b/frontend_tests/node_tests/topic_list_data.js
index ce65b33f04..3595654e4f 100644
--- a/frontend_tests/node_tests/topic_list_data.js
+++ b/frontend_tests/node_tests/topic_list_data.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 set_global("narrow_state", {});
 set_global("unread", {});
 set_global("muting", {});
diff --git a/frontend_tests/node_tests/unread.js b/frontend_tests/node_tests/unread.js
index 301a3eb765..41648abdb1 100644
--- a/frontend_tests/node_tests/unread.js
+++ b/frontend_tests/node_tests/unread.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 zrequire("muting");
 zrequire("people");
 zrequire("stream_data");
diff --git a/frontend_tests/node_tests/util.js b/frontend_tests/node_tests/util.js
index 1c85ea7bea..50e4778720 100644
--- a/frontend_tests/node_tests/util.js
+++ b/frontend_tests/node_tests/util.js
@@ -1,4 +1,5 @@
 const {JSDOM} = require("jsdom");
+const _ = require("lodash");
 
 set_global("$", global.make_zjquery());
 set_global("DOMParser", new JSDOM().window.DOMParser);
diff --git a/frontend_tests/zjsunit/finder.js b/frontend_tests/zjsunit/finder.js
index 3aced6e9e5..e5adbacfb4 100644
--- a/frontend_tests/zjsunit/finder.js
+++ b/frontend_tests/zjsunit/finder.js
@@ -1,7 +1,7 @@
 const fs = require("fs");
 const path = require("path");
 
-const _ = require("underscore/underscore.js");
+const _ = require("lodash");
 
 exports.find_files_to_run = function () {
     let oneFileFilter = [];
diff --git a/frontend_tests/zjsunit/index.js b/frontend_tests/zjsunit/index.js
index c932a165f8..1aa5193ab8 100644
--- a/frontend_tests/zjsunit/index.js
+++ b/frontend_tests/zjsunit/index.js
@@ -2,7 +2,7 @@ const fs = require("fs");
 const Module = require("module");
 const path = require("path");
 
-const escapeRegExp = require("lodash/escapeRegExp");
+const _ = require("lodash");
 
 const finder = require("./finder.js");
 const handlebars = require("./handlebars.js");
@@ -15,18 +15,15 @@ const zjquery = require("./zjquery.js");
 require("@babel/register")({
     extensions: [".es6", ".es", ".jsx", ".js", ".mjs", ".ts"],
     only: [
-        new RegExp("^" + escapeRegExp(path.resolve(__dirname, "../../static/js")) + path.sep),
+        new RegExp("^" + _.escapeRegExp(path.resolve(__dirname, "../../static/js")) + path.sep),
         new RegExp(
-            "^" + escapeRegExp(path.resolve(__dirname, "../../static/shared/js")) + path.sep,
+            "^" + _.escapeRegExp(path.resolve(__dirname, "../../static/shared/js")) + path.sep,
         ),
     ],
     plugins: ["rewire-ts"],
 });
 
 global.assert = require("assert").strict;
-global._ = require("underscore/underscore.js");
-
-const _ = global._;
 
 // Create a helper function to avoid sneaky delays in tests.
 function immediate(f) {
diff --git a/frontend_tests/zjsunit/markdown_assert.js b/frontend_tests/zjsunit/markdown_assert.js
index fff9fa5dbd..73778525fb 100644
--- a/frontend_tests/zjsunit/markdown_assert.js
+++ b/frontend_tests/zjsunit/markdown_assert.js
@@ -21,7 +21,7 @@
  */
 
 const {JSDOM} = require("jsdom");
-const _ = require("underscore");
+const _ = require("lodash");
 
 const mdiff = require("./mdiff.js");
 
diff --git a/frontend_tests/zjsunit/namespace.js b/frontend_tests/zjsunit/namespace.js
index 10d8b2bd40..be767e1048 100644
--- a/frontend_tests/zjsunit/namespace.js
+++ b/frontend_tests/zjsunit/namespace.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const requires = [];
 const new_globals = new Set();
 let old_globals = {};
diff --git a/package.json b/package.json
index 12022d6a06..b7724154bf 100644
--- a/package.json
+++ b/package.json
@@ -42,6 +42,7 @@
     "jquery-validation": "^1.19.0",
     "js-yaml": "^3.13.1",
     "katex": "^0.12.0",
+    "lodash": "^4.17.19",
     "mini-css-extract-plugin": "^0.9.0",
     "moment": "^2.24.0",
     "moment-timezone": "^0.5.25",
@@ -67,7 +68,6 @@
     "style-loader": "^1.0.0",
     "terser-webpack-plugin": "^3.0.3",
     "turndown": "^6.0.0",
-    "underscore": "^1.9.1",
     "unorm": "^1.6.0",
     "webfonts-loader": "^5.0.0",
     "webpack": "^4.33.0",
@@ -84,7 +84,6 @@
     "@types/node": "^14.0.11",
     "@types/optimize-css-assets-webpack-plugin": "^5.0.1",
     "@types/terser-webpack-plugin": "^3.0.0",
-    "@types/underscore": "^1.8.18",
     "@types/webpack": "^4.4.32",
     "@types/webpack-dev-server": "^3.1.6",
     "@typescript-eslint/eslint-plugin": "^3.1.0",
diff --git a/static/js/activity.js b/static/js/activity.js
index e96eb2e204..77c011c013 100644
--- a/static/js/activity.js
+++ b/static/js/activity.js
@@ -1,3 +1,4 @@
+const _ = require("lodash");
 /*
     Helpers for detecting user activity and managing user idle states
 */
diff --git a/static/js/archive.js b/static/js/archive.js
index badfa4a836..bd6dd997b8 100644
--- a/static/js/archive.js
+++ b/static/js/archive.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const render_archive_message_group = require("../templates/archive_message_group.hbs");
 
 function should_separate_into_groups(current_msg_time, next_msg_time) {
diff --git a/static/js/bot_data.js b/static/js/bot_data.js
index 98263ff9da..3244ac91d8 100644
--- a/static/js/bot_data.js
+++ b/static/js/bot_data.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const bots = new Map();
 
 const bot_fields = [
diff --git a/static/js/bundles/common.js b/static/js/bundles/common.js
index 9c0159223f..a5eed263e1 100644
--- a/static/js/bundles/common.js
+++ b/static/js/bundles/common.js
@@ -2,7 +2,6 @@ import "core-js/features/promise";
 import "core-js/features/symbol";
 import "../../../tools/debug-require";
 import "jquery/dist/jquery.js";
-import "underscore/underscore.js";
 import "../page_params.js";
 import "../csrf.js";
 import "../blueslip.js";
diff --git a/static/js/click_handlers.js b/static/js/click_handlers.js
index c9db3b2d60..76a0bfa806 100644
--- a/static/js/click_handlers.js
+++ b/static/js/click_handlers.js
@@ -1,3 +1,4 @@
+const _ = require("lodash");
 // You won't find every click handler here, but it's a good place to start!
 
 const render_buddy_list_tooltip = require("../templates/buddy_list_tooltip.hbs");
diff --git a/static/js/color_data.js b/static/js/color_data.js
index 80a04753f8..6a9da6d296 100644
--- a/static/js/color_data.js
+++ b/static/js/color_data.js
@@ -1,3 +1,4 @@
+const _ = require("lodash");
 // These colors are used now for streams.
 const stream_colors = [
     "#76ce90",
diff --git a/static/js/compose_fade.js b/static/js/compose_fade.js
index 8e9e1a916d..bf1aef1850 100644
--- a/static/js/compose_fade.js
+++ b/static/js/compose_fade.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const util = require("./util");
 
 let focused_recipient;
diff --git a/static/js/filter.js b/static/js/filter.js
index b1ef2e9ca1..e5461f15b0 100644
--- a/static/js/filter.js
+++ b/static/js/filter.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const util = require("./util");
 
 function zephyr_stream_name_match(message, operand) {
diff --git a/static/js/hotspots.js b/static/js/hotspots.js
index 38466fd000..aa15ee6eff 100644
--- a/static/js/hotspots.js
+++ b/static/js/hotspots.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const render_hotspot_overlay = require("../templates/hotspot_overlay.hbs");
 const render_intro_reply_hotspot = require("../templates/intro_reply_hotspot.hbs");
 
diff --git a/static/js/huddle_data.js b/static/js/huddle_data.js
index e3a07f30f6..a4ee46cac7 100644
--- a/static/js/huddle_data.js
+++ b/static/js/huddle_data.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const huddle_timestamps = new Map();
 
 exports.process_loaded_messages = function (messages) {
diff --git a/static/js/markdown.js b/static/js/markdown.js
index ab697ccdb0..344cd5f58b 100644
--- a/static/js/markdown.js
+++ b/static/js/markdown.js
@@ -1,4 +1,5 @@
 const katex = require("katex/dist/katex.min.js");
+const _ = require("lodash");
 
 const fenced_code = require("../shared/js/fenced_code");
 
diff --git a/static/js/message_flags.js b/static/js/message_flags.js
index 23e8380804..f3530fd4e6 100644
--- a/static/js/message_flags.js
+++ b/static/js/message_flags.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 function send_flag_update(message, flag, op) {
     channel.post({
         url: "/json/messages/flags",
diff --git a/static/js/message_list_data.js b/static/js/message_list_data.js
index 45439fa36b..80d9d8ce04 100644
--- a/static/js/message_list_data.js
+++ b/static/js/message_list_data.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const util = require("./util");
 
 function MessageListData(opts) {
diff --git a/static/js/message_list_view.js b/static/js/message_list_view.js
index af83e9c586..51117509b0 100644
--- a/static/js/message_list_view.js
+++ b/static/js/message_list_view.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const render_bookend = require("../templates/bookend.hbs");
 const render_message_group = require("../templates/message_group.hbs");
 const render_recipient_row = require("../templates/recipient_row.hbs");
@@ -475,7 +477,7 @@ MessageListView.prototype = {
                 // rerender the last message
                 message_actions.rerender_messages_next_same_sender.push(prev_msg_container);
                 message_actions.append_messages = _.first(new_message_groups).message_containers;
-                new_message_groups = _.rest(new_message_groups);
+                new_message_groups = _.tail(new_message_groups);
             } else if (first_group !== undefined && second_group !== undefined) {
                 if (same_day(prev_msg_container, curr_msg_container)) {
                     clear_group_date_divider(second_group);
diff --git a/static/js/message_scroll.js b/static/js/message_scroll.js
index d011b714e5..e929c7d565 100644
--- a/static/js/message_scroll.js
+++ b/static/js/message_scroll.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 let actively_scrolling = false;
 
 // Tracks whether the next scroll that will complete is initiated by
diff --git a/static/js/notifications.js b/static/js/notifications.js
index 3625158a2a..7664c8330e 100644
--- a/static/js/notifications.js
+++ b/static/js/notifications.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const render_compose_notification = require("../templates/compose_notification.hbs");
 const render_notification = require("../templates/notification.hbs");
 
diff --git a/static/js/people.js b/static/js/people.js
index f69bf72c0a..4b1fbda9d4 100644
--- a/static/js/people.js
+++ b/static/js/people.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 require("unorm"); // String.prototype.normalize polyfill for IE11
 const typeahead = require("../shared/js/typeahead");
 
diff --git a/static/js/pm_list_dom.js b/static/js/pm_list_dom.js
index ca3d5184f5..95250b7005 100644
--- a/static/js/pm_list_dom.js
+++ b/static/js/pm_list_dom.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const render_pm_list_item = require("../templates/pm_list_item.hbs");
 
 exports.keyed_pm_li = (convo) => {
diff --git a/static/js/portico/integrations.js b/static/js/portico/integrations.js
index 4e80cb89b1..c2367ca155 100644
--- a/static/js/portico/integrations.js
+++ b/static/js/portico/integrations.js
@@ -1,3 +1,5 @@
+import _ from "lodash";
+
 import blueslip from "./../blueslip";
 import * as google_analytics from "./google-analytics.js";
 import {path_parts} from "./landing-page";
diff --git a/static/js/portico/team.js b/static/js/portico/team.js
index 11596477cf..0d1c994f65 100644
--- a/static/js/portico/team.js
+++ b/static/js/portico/team.js
@@ -1,3 +1,5 @@
+import _ from "lodash";
+
 const contributors_list = page_params.contributors;
 
 const repo_name_to_tab_name = {
diff --git a/static/js/reactions.js b/static/js/reactions.js
index 33edd7c9bc..bb49c3e961 100644
--- a/static/js/reactions.js
+++ b/static/js/reactions.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const emoji = require("../shared/js/emoji");
 const render_message_reaction = require("../templates/message_reaction.hbs");
 
diff --git a/static/js/server_events.js b/static/js/server_events.js
index 1ca9e04fb2..8b4a689b12 100644
--- a/static/js/server_events.js
+++ b/static/js/server_events.js
@@ -1,3 +1,4 @@
+const _ = require("lodash");
 // Docs: https://zulip.readthedocs.io/en/latest/subsystems/events-system.html
 
 let waiting_on_homeview_load = true;
diff --git a/static/js/settings_account.js b/static/js/settings_account.js
index 82a08e6e67..f963c2ed57 100644
--- a/static/js/settings_account.js
+++ b/static/js/settings_account.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const render_settings_api_key_modal = require("../templates/settings/api_key_modal.hbs");
 const render_settings_custom_user_profile_field = require("../templates/settings/custom_user_profile_field.hbs");
 const render_settings_dev_env_email_access = require("../templates/settings/dev_env_email_access.hbs");
diff --git a/static/js/settings_user_groups.js b/static/js/settings_user_groups.js
index 1c3072a537..3ab185bd00 100644
--- a/static/js/settings_user_groups.js
+++ b/static/js/settings_user_groups.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const render_admin_user_group_list = require("../templates/admin_user_group_list.hbs");
 const render_confirm_delete_user = require("../templates/confirm_delete_user.hbs");
 
diff --git a/static/js/stream_color.js b/static/js/stream_color.js
index b8191eef9e..db9a0b6a58 100644
--- a/static/js/stream_color.js
+++ b/static/js/stream_color.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 exports.default_color = "#c2c2c2";
 
 // Classes which could be returned by get_color_class.
diff --git a/static/js/stream_list.js b/static/js/stream_list.js
index 99e1e72eed..b9daba6a9f 100644
--- a/static/js/stream_list.js
+++ b/static/js/stream_list.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const render_stream_privacy = require("../templates/stream_privacy.hbs");
 const render_stream_sidebar_row = require("../templates/stream_sidebar_row.hbs");
 
diff --git a/static/js/subs.js b/static/js/subs.js
index 86325d6d5c..f923724978 100644
--- a/static/js/subs.js
+++ b/static/js/subs.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const render_subscription = require("../templates/subscription.hbs");
 const render_subscription_settings = require("../templates/subscription_settings.hbs");
 const render_subscription_table_body = require("../templates/subscription_table_body.hbs");
diff --git a/static/js/topic_list.js b/static/js/topic_list.js
index 3cd87ba3e7..ee7b960168 100644
--- a/static/js/topic_list.js
+++ b/static/js/topic_list.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const render_more_topics = require("../templates/more_topics.hbs");
 const render_more_topics_spinner = require("../templates/more_topics_spinner.hbs");
 const render_topic_list_item = require("../templates/topic_list_item.hbs");
diff --git a/static/js/typing_data.js b/static/js/typing_data.js
index 51ce3bed74..2a2017e5bc 100644
--- a/static/js/typing_data.js
+++ b/static/js/typing_data.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const util = require("./util");
 // See docs/subsystems/typing-indicators.md for details on typing indicators.
 
@@ -46,7 +48,7 @@ exports.get_group_typists = function (group) {
 exports.get_all_typists = function () {
     let typists = [].concat(...Array.from(typist_dct.values()));
     typists = util.sorted_ids(typists);
-    typists = _.uniq(typists, true);
+    typists = _.sortedUniq(typists);
     return typists;
 };
 
diff --git a/static/js/ui_init.js b/static/js/ui_init.js
index f8cfa2170c..a21f658c49 100644
--- a/static/js/ui_init.js
+++ b/static/js/ui_init.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 const generated_emoji_codes = require("../generated/emoji/emoji_codes.json");
 const emoji = require("../shared/js/emoji");
 
diff --git a/static/js/ui_report.js b/static/js/ui_report.js
index 19ec1d5ae5..c23491251c 100644
--- a/static/js/ui_report.js
+++ b/static/js/ui_report.js
@@ -1,3 +1,4 @@
+const _ = require("lodash");
 /* Arguments used in the report_* functions are,
    response- response that we want to display
    status_box- element being used to display the response
diff --git a/static/js/util.js b/static/js/util.js
index 5a4a8bea24..f8798ff84d 100644
--- a/static/js/util.js
+++ b/static/js/util.js
@@ -1,3 +1,4 @@
+const _ = require("lodash");
 // From MDN: https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Math/random
 exports.random_int = function random_int(min, max) {
     return Math.floor(Math.random() * (max - min + 1)) + min;
@@ -229,7 +230,7 @@ exports.sorted_ids = function (ids) {
     // it also makes sure we don't mutate the list.
     let id_list = ids.map(to_int);
     id_list.sort((a, b) => a - b);
-    id_list = _.uniq(id_list, true);
+    id_list = _.sortedUniq(id_list);
 
     return id_list;
 };
diff --git a/static/js/vdom.js b/static/js/vdom.js
index edf523dd0b..8b46c83a66 100644
--- a/static/js/vdom.js
+++ b/static/js/vdom.js
@@ -1,3 +1,5 @@
+const _ = require("lodash");
+
 exports.eq_array = (a, b, eq) => {
     if (a === b) {
         // either both are undefined, or they
diff --git a/static/shared/js/fenced_code.js b/static/shared/js/fenced_code.js
index 752801b43a..b0594483d2 100644
--- a/static/shared/js/fenced_code.js
+++ b/static/shared/js/fenced_code.js
@@ -1,5 +1,5 @@
 import katex from "katex/dist/katex.min.js";
-import _ from "underscore";
+import _ from "lodash";
 
 // Parsing routine that can be dropped in to message parsing
 // and formats code blocks
diff --git a/static/shared/js/typing_status.js b/static/shared/js/typing_status.js
index de2db772bb..783d84b71b 100644
--- a/static/shared/js/typing_status.js
+++ b/static/shared/js/typing_status.js
@@ -1,4 +1,4 @@
-import _ from "underscore";
+import _ from "lodash";
 
 // The following constants are tuned to work with
 // TYPING_STARTED_EXPIRY_PERIOD, which is what the other
diff --git a/static/shared/package.json b/static/shared/package.json
index c288b88204..26005e5e64 100644
--- a/static/shared/package.json
+++ b/static/shared/package.json
@@ -4,6 +4,6 @@
   "license": "Apache-2.0",
   "dependencies": {
     "katex": "^0.12.0",
-    "underscore": "^1.9.1"
+    "lodash": "^4.17.19"
   }
 }
diff --git a/templates/zerver/team.html b/templates/zerver/team.html
index 65c3f439b6..c11117be2f 100644
--- a/templates/zerver/team.html
+++ b/templates/zerver/team.html
@@ -120,7 +120,7 @@
                     <div id="tab-terminal" class="contributors"></div>
                 </div>
 
-                <!-- Compiled using underscore -->
+                <!-- Compiled using lodash -->
                 <script type="text/template" id="contributors-template">
                     <div class="person">
                         <a href="<%= profile_url %>" target="_blank" rel="noopener noreferrer" class="no-underline">
diff --git a/tools/check-templates b/tools/check-templates
index deb796482a..4c735353e0 100755
--- a/tools/check-templates
+++ b/tools/check-templates
@@ -45,7 +45,7 @@ def check_html_templates(templates: Iterable[str], all_dups: bool, fix: bool) ->
     # so we exclude them from our linter.
     logging.basicConfig(format='%(levelname)s:%(message)s')
     templates = sorted(fn for fn in templates if 'casperjs' not in fn)
-    # Use of underscore templates <%= %>.
+    # Use of lodash templates <%= %>.
     if 'templates/zerver/team.html' in templates:
         templates.remove('templates/zerver/team.html')
 
diff --git a/tools/webpack.config.ts b/tools/webpack.config.ts
index 534866efd2..131becb562 100644
--- a/tools/webpack.config.ts
+++ b/tools/webpack.config.ts
@@ -240,7 +240,7 @@ export default (env?: string): webpack.Configuration[] => {
     };
 
     // Expose Global variables for third party libraries to webpack modules
-    // Use the unminified versions of jquery and underscore so that
+    // Use the unminified version of jquery so that
     // Good error messages show up in production and development in the source maps
     const exposeOptions = [
         {path: "./debug-require.js", name: "require"},
@@ -250,7 +250,6 @@ export default (env?: string): webpack.Configuration[] => {
         {path: "../static/third/marked/lib/marked.js"},
         {path: "../static/js/debug.js"},
         {path: "jquery/dist/jquery.js", name: ["$", "jQuery"]},
-        {path: "underscore/underscore.js", name: "_"},
         {path: "handlebars/dist/cjs/handlebars.runtime.js", name: "Handlebars"},
         {path: "sortablejs/Sortable.js"},
         {path: "winchan/winchan.js", name: "WinChan"},
diff --git a/version.py b/version.py
index 0f73cd21d0..873f67af98 100644
--- a/version.py
+++ b/version.py
@@ -44,4 +44,4 @@ API_FEATURE_LEVEL = 27
 #   historical commits sharing the same major version, in which case a
 #   minor version bump suffices.
 
-PROVISION_VERSION = '91.3'
+PROVISION_VERSION = '92.0'
diff --git a/yarn.lock b/yarn.lock
index d1ea825de4..4d5ea8f17d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1261,11 +1261,6 @@
   dependencies:
     source-map "^0.6.1"
 
-"@types/underscore@^1.8.18":
-  version "1.10.9"
-  resolved "https://registry.yarnpkg.com/@types/underscore/-/underscore-1.10.9.tgz#ba7a9cfc15873e67821611503a34a7c26bf7264f"
-  integrity sha512-mKzbGzZ02nXKSV2VJdY92KNzwV7x4Zq626/4qR+7nJEceyKGk5gJXCi0mQqp3tEUa3GTc8uiuxqm4QyIaP0I1Q==
-
 "@types/unist@^2.0.0", "@types/unist@^2.0.2":
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/@types/unist/-/unist-2.0.3.tgz#9c088679876f374eb5983f150d4787aa6fb32d7e"