diff --git a/packages/boilerplate-generator-tests/package.js b/packages/boilerplate-generator-tests/package.js
index 98a6db887d..667dfe56e2 100644
--- a/packages/boilerplate-generator-tests/package.js
+++ b/packages/boilerplate-generator-tests/package.js
@@ -13,7 +13,6 @@ Npm.depends({
 Package.onTest(function (api) {
   api.use('ecmascript');
   api.use([
-    'underscore',
     'tinytest',
     'boilerplate-generator'
   ], 'server');
diff --git a/packages/boilerplate-generator-tests/web.browser-tests.js b/packages/boilerplate-generator-tests/web.browser-tests.js
index 915e2f6ebf..48c0d06fd8 100644
--- a/packages/boilerplate-generator-tests/web.browser-tests.js
+++ b/packages/boilerplate-generator-tests/web.browser-tests.js
@@ -1,6 +1,5 @@
 import { parse, serialize } from 'parse5';
 import { generateHTMLForArch } from './test-lib';
-import { _ } from 'meteor/underscore';
 
 Tinytest.addAsync(
   "boilerplate-generator-tests - web.browser - basic output",
@@ -66,10 +65,6 @@ Tinytest.addAsync(
   async function (test) {
     const newHtml = await generateHTMLForArch("web.browser", false);
 
-    _.templateSettings = {
-      interpolate: /\{\{(.+?)\}\}/g
-    };
-
     test.matches(newHtml, /foo="foobar"/);
     test.matches(newHtml, /<link[^<>]*href="[^<>]*bootstrap[^<>]*">/);
     test.matches(newHtml, /<script[^<>]*src="[^<>]*templating[^<>]*">/);
diff --git a/packages/boilerplate-generator-tests/web.cordova-tests.js b/packages/boilerplate-generator-tests/web.cordova-tests.js
index 04eb249ac5..ffe954105e 100644
--- a/packages/boilerplate-generator-tests/web.cordova-tests.js
+++ b/packages/boilerplate-generator-tests/web.cordova-tests.js
@@ -1,6 +1,5 @@
 import { parse, serialize } from 'parse5';
 import { generateHTMLForArch } from './test-lib';
-import { _ } from 'meteor/underscore';
 
 Tinytest.addAsync(
   "boilerplate-generator-tests - web.cordova - basic output",
@@ -60,9 +59,7 @@ Tinytest.addAsync(
   async function (test) {
     const newHtml = await generateHTMLForArch('web.cordova', false);
 
-    _.templateSettings = {
-      interpolate: /\{\{(.+?)\}\}/g
-    };
+    
     test.matches(newHtml, /<link[^<>]*href="[^<>]*bootstrap[^<>]*">/);
     test.matches(newHtml, /<script[^<>]*src="[^<>]*templating[^<>]*">/);
     test.matches(newHtml, /<script>var a/);
diff --git a/packages/deprecated/http/package.js b/packages/deprecated/http/package.js
index 405387d200..b19ac4248e 100644
--- a/packages/deprecated/http/package.js
+++ b/packages/deprecated/http/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: "Make HTTP calls to remote servers",
-  version: '3.0.0-beta300.7',
+  version: '3.0.0',
   deprecated: 'Please use the fetch package'
 });
 
diff --git a/packages/test-helpers/async_multi.js b/packages/test-helpers/async_multi.js
index 684a034bac..1286508fde 100644
--- a/packages/test-helpers/async_multi.js
+++ b/packages/test-helpers/async_multi.js
@@ -52,32 +52,32 @@ var ExpectationManager = function (test, onComplete) {
   self.outstanding = 0;
 };
 
-_.extend(ExpectationManager.prototype, {
-  expect: function (/* arguments */) {
+Object.assign(ExpectationManager.prototype, {
+  expect: function (...args) {
     var self = this;
 
-    if (typeof arguments[0] === "function")
-      var expected = arguments[0];
+    if (typeof args[0] === "function")
+      var expected = args[0];
     else
-      var expected = _.toArray(arguments);
+      var expected = args;
 
     if (self.closed)
       throw new Error("Too late to add more expectations to the test");
     self.outstanding++;
 
-    return async function (/* arguments */) {
+    return async function (...args) {
       if (self.dead)
         return;
 
       if (typeof expected === "function") {
         try {
-          await expected.apply({}, arguments);
+          await expected.apply({}, args);
         } catch (e) {
           if (self.cancel())
             self.test.exception(e);
         }
       } else {
-        self.test.equal(_.toArray(arguments), expected);
+        self.test.equal(args, expected);
       }
 
       self.outstanding--;
@@ -115,12 +115,12 @@ testAsyncMulti = function (name, funcs, { isOnly = false } = {}) {
 
   const addFunction = isOnly ? Tinytest.onlyAsync : Tinytest.addAsync;
   addFunction(name, function (test, onComplete) {
-    var remaining = _.clone(funcs);
+    var remaining = Object.assign({}, funcs);
     var context = {};
     var i = 0;
 
     var runNext = function () {
-      var func = remaining.shift();
+      var func = Object.values(remaining).shift();
       if (!func) {
         delete test.extraDetails.asyncBlock;
         onComplete();
@@ -142,7 +142,7 @@ testAsyncMulti = function (name, funcs, { isOnly = false } = {}) {
         test.extraDetails.asyncBlock = i++;
 
         new Promise(resolve => {
-          const result = func.apply(context, [test, _.bind(em.expect, em)]);
+          const result = func.apply(context, [test, em.expect.bind(em)]);
           if (result && typeof result.then === "function") {
             return result.then((r) => resolve(r))
           }
diff --git a/packages/test-helpers/callback_logger.js b/packages/test-helpers/callback_logger.js
index 7443735390..2f98cbe8de 100644
--- a/packages/test-helpers/callback_logger.js
+++ b/packages/test-helpers/callback_logger.js
@@ -1,3 +1,6 @@
+import isEmpty from 'lodash.isempty';
+import isEqual from 'lodash.isequal';
+
 // This file allows you to write tests that expect certain callbacks to be
 // called in certain orders, or optionally in groups where the order does not
 // matter.  It can be set up in either a synchronous manner, so that each
@@ -21,9 +24,10 @@ var CallbackLogger = function (test, callbackNames) {
   var self = this;
   self._log = [];
   self._test = test;
-  _.each(callbackNames, function (callbackName) {
+  self._yielded = false;
+  callbackNames.forEach(function (callbackName) {
     self[callbackName] = function () {
-      var args = _.toArray(arguments);
+      var args = Array.from(arguments);
       self._log.push({callback: callbackName, args: args});
     };
   });
@@ -32,7 +36,7 @@ var CallbackLogger = function (test, callbackNames) {
 CallbackLogger.prototype.expectResult = async function (callbackName, args) {
   var self = this;
   await self._waitForLengthOrTimeout(1);
-  if (_.isEmpty(self._log)) {
+  if (isEmpty(self._log)) {
     self._test.fail(["Expected callback " + callbackName + " got none"]);
     return;
   }
@@ -74,13 +78,13 @@ CallbackLogger.prototype.expectResultUnordered = async function (list) {
 
   await self._waitForLengthOrTimeout(list.length);
 
-  list = _.clone(list); // shallow copy.
+  list = [...list]; // shallow copy.
   var i = list.length;
   while (i > 0) {
     var found = false;
     var dequeued = self._log.shift();
     for (var j = 0; j < list.length; j++) {
-      if (_.isEqual(list[j], dequeued)) {
+      if (isEqual(list[j], dequeued)) {
         list.splice(j, 1);
         found = true;
         break;
@@ -110,4 +114,4 @@ CallbackLogger.prototype.expectNoResult = async function (fn) {
   await self._waitForLengthOrTimeout(0);
 
   self._expectNoResultImpl();
-};
+};
\ No newline at end of file
diff --git a/packages/test-helpers/connection_server.js b/packages/test-helpers/connection_server.js
index 4a360d1e97..ffb15ad5bc 100644
--- a/packages/test-helpers/connection_server.js
+++ b/packages/test-helpers/connection_server.js
@@ -1,3 +1,5 @@
+import isString from 'lodash.isstring';
+
 // Establish a connection from the server to the server, and wait
 // until the client side of the connection has received the session
 // id.  On success call `succeeded` with two arguments, the client
@@ -13,7 +15,7 @@ makeTestConnection = function (test, succeeded, failed) {
 
   // Add incoming connections to `serverConns`.
   var onConnectionHandle = Meteor.onConnection(function (serverConn) {
-    test.isTrue(_.isString(serverConn.id), "connection handle id exists and is a string");
+    test.isTrue(isString(serverConn.id), "connection handle id exists and is a string");
     if (serverConns[serverConn.id]) {
       test.fail("onConnection callback called multiple times for same session id");
       failed();
diff --git a/packages/test-helpers/event_simulation.js b/packages/test-helpers/event_simulation.js
index cf4ed8b3af..c4f8cc1086 100644
--- a/packages/test-helpers/event_simulation.js
+++ b/packages/test-helpers/event_simulation.js
@@ -9,11 +9,11 @@ simulateEvent = function (node, event, args, options) {
   if (document.createEvent) {
     var e = document.createEvent("Event");
     e.initEvent(event, bubbles, true);
-    _.extend(e, args);
+    Object.assign(e, args);
     node.dispatchEvent(e);
   } else {
     var e = document.createEventObject();
-    _.extend(e, args);
+    Object.assign(e, args);
     node.fireEvent("on" + event, e);
   }
 };
diff --git a/packages/test-helpers/package.js b/packages/test-helpers/package.js
index 7f8176ec31..bb7f296c60 100644
--- a/packages/test-helpers/package.js
+++ b/packages/test-helpers/package.js
@@ -3,10 +3,15 @@ Package.describe({
   version: "2.0.1",
 });
 
+Npm.depends({
+  'lodash.isequal': '4.5.0',
+  'lodash.isempty': '4.4.0',
+  'lodash.isstring': '4.0.1'
+});
+
 Package.onUse(function (api) {
   api.use([
     "ecmascript",
-    "underscore",
     "tracker",
     "ejson",
     "tinytest",
@@ -64,7 +69,7 @@ Package.onUse(function (api) {
 
 Package.onTest(function (api) {
   api.use("tinytest");
-  api.use(["test-helpers", "underscore"]);
+  api.use(["test-helpers"]);
   api.addFiles("try_all_permutations_test.js", "client");
   api.addFiles("seeded_random_test.js");
 });
diff --git a/packages/test-helpers/try_all_permutations.js b/packages/test-helpers/try_all_permutations.js
index 2276c10a01..5b60aa62b9 100644
--- a/packages/test-helpers/try_all_permutations.js
+++ b/packages/test-helpers/try_all_permutations.js
@@ -39,7 +39,7 @@ try_all_permutations = function () {
 
   var expand_next_set = function () {
     if (current_set === args.length) {
-      _.each(chosen, function (f) { f(); });
+      chosen.forEach(function (f) { f(); });
     } else {
       var set = args[current_set];
       if (typeof set === "function")
diff --git a/packages/test-helpers/try_all_permutations_test.js b/packages/test-helpers/try_all_permutations_test.js
index f9bebffea9..4c9b451fff 100644
--- a/packages/test-helpers/try_all_permutations_test.js
+++ b/packages/test-helpers/try_all_permutations_test.js
@@ -61,7 +61,7 @@ Tinytest.add("test-helpers - try_all_permutations", function (test) {
     var seen = {};
 
     for (var i = 0; i < n; i++)
-      fs.push(_.bind(function (x) { seq += x + "_"; }, null, i));
+      fs.push(function (x) { seq += x + "_"; }.bind(null, i));
     try_all_permutations(
       function () {seq = "";},
       fs,
@@ -75,7 +75,7 @@ Tinytest.add("test-helpers - try_all_permutations", function (test) {
     var expected_count = 1;
     for (var i = n; i >= 1; i--)
       expected_count *= i;
-    test.equal(_.keys(seen).length, expected_count);
+    test.equal(Object.keys(seen).length, expected_count);
   };
 
   for (var i = 1; i <= 5; i++)
diff --git a/packages/webapp/.npm/package/npm-shrinkwrap.json b/packages/webapp/.npm/package/npm-shrinkwrap.json
index e959fb9bcd..39ebcd33bb 100644
--- a/packages/webapp/.npm/package/npm-shrinkwrap.json
+++ b/packages/webapp/.npm/package/npm-shrinkwrap.json
@@ -294,6 +294,11 @@
       "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.1.tgz",
       "integrity": "sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g=="
     },
+    "lodash.has": {
+      "version": "4.5.2",
+      "resolved": "https://registry.npmjs.org/lodash.has/-/lodash.has-4.5.2.tgz",
+      "integrity": "sha512-rnYUdIo6xRCJnQmbVFEwcxF144erlD+M3YcJUVesflU9paQaE8p+fJDcIQrlMYbxoANFL+AB9hZrzSBBk5PL+g=="
+    },
     "lru-cache": {
       "version": "7.18.3",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-7.18.3.tgz",
@@ -509,6 +514,11 @@
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.19.8.tgz",
       "integrity": "sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw=="
     },
+    "undici-types": {
+      "version": "5.26.5",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
+      "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA=="
+    },
     "unpipe": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
diff --git a/packages/webapp/package.js b/packages/webapp/package.js
index 9b0b991a92..d225d066db 100644
--- a/packages/webapp/package.js
+++ b/packages/webapp/package.js
@@ -13,6 +13,7 @@ Npm.depends({
   send: "1.1.0",
   "stream-to-string": "1.2.1",
   qs: "6.13.0",
+  'lodash.has': '4.5.2',
   "useragent-ng": "2.4.3",
   "tmp": "0.2.3",
 });
@@ -31,14 +32,13 @@ Package.onUse(function (api) {
   api.use("ecmascript");
   api.use(
     [
-      "logging",
-      "underscore",
-      "routepolicy",
-      "modern-browsers",
-      "boilerplate-generator",
-      "webapp-hashing",
-      "inter-process-messaging",
-      "callback-hook",
+      'logging',
+      'routepolicy',
+      'modern-browsers',
+      'boilerplate-generator',
+      'webapp-hashing',
+      'inter-process-messaging',
+      'callback-hook',
     ],
     "server"
   );
@@ -66,7 +66,6 @@ Package.onTest(function (api) {
     "ecmascript",
     "webapp",
     "http",
-    "underscore",
     "fetch",
     "test-helpers",
   ]);
diff --git a/packages/webapp/webapp_server.js b/packages/webapp/webapp_server.js
index af75c32ebe..5b3ef24edf 100644
--- a/packages/webapp/webapp_server.js
+++ b/packages/webapp/webapp_server.js
@@ -19,6 +19,7 @@ import {
 } from './socket_file.js';
 import cluster from 'cluster';
 import { execSync } from 'child_process';
+import has from 'lodash.has';
 
 var SHORT_SOCKET_TIMEOUT = 5 * 1000;
 var LONG_SOCKET_TIMEOUT = 120 * 1000;
@@ -210,12 +211,12 @@ WebApp.categorizeRequest = function(req) {
 var htmlAttributeHooks = [];
 var getHtmlAttributes = function(request) {
   var combinedAttributes = {};
-  _.each(htmlAttributeHooks || [], function(hook) {
+  (htmlAttributeHooks || []).forEach(function(hook) {
     var attributes = hook(request);
     if (attributes === null) return;
     if (typeof attributes !== 'object')
       throw Error('HTML attribute hook must return null or object');
-    _.extend(combinedAttributes, attributes);
+    Object.assign(combinedAttributes, attributes);
   });
   return combinedAttributes;
 };
@@ -298,7 +299,7 @@ WebApp._timeoutAdjustmentRequestCallback = function(req, res) {
   res.on('finish', function() {
     res.setTimeout(SHORT_SOCKET_TIMEOUT);
   });
-  _.each(finishListeners, function(l) {
+  Object.values(finishListeners).forEach(function(l) {
     res.on('finish', l);
   });
 };
@@ -452,13 +453,14 @@ async function getBoilerplateAsync(request, arch) {
     return true;
   });
   runtimeConfig.isUpdatedByArch[arch] = false;
+  const { dynamicHead, dynamicBody } = request;
   const data = Object.assign(
     {},
     boilerplate.baseData,
     {
       htmlAttributes: getHtmlAttributes(request),
     },
-    _.pick(request, 'dynamicHead', 'dynamicBody')
+    { dynamicHead, dynamicBody }
   );
 
   let madeChanges = false;
@@ -542,9 +544,8 @@ WebAppInternals.generateBoilerplateInstance = function(
           return pathJoin(archPath[arch], itemPath);
         },
         baseDataExtension: {
-          additionalStaticJs: _.map(additionalStaticJs || [], function(
-            contents,
-            pathname
+          additionalStaticJs: (Object.entries(additionalStaticJs) || []).map(function(
+            [pathname, contents]
           ) {
             return {
               pathname: pathname,
@@ -621,7 +622,7 @@ WebAppInternals.staticFilesMiddleware = async function(
   };
 
   if (
-    _.has(additionalStaticJs, pathname) &&
+    has(additionalStaticJs, pathname) &&
     !WebAppInternals.inlineScriptsAllowed()
   ) {
     serveStaticJs(additionalStaticJs[pathname]);
@@ -1363,7 +1364,7 @@ async function runWebAppServer() {
   let warnedAboutConnectUsage = false;
 
   // start up app
-  _.extend(WebApp, {
+  Object.assign(WebApp, {
     connectHandlers: packageAndAppHandlers,
     handlers: packageAndAppHandlers,
     rawConnectHandlers: rawExpressHandlers,
diff --git a/packages/webapp/webapp_tests.js b/packages/webapp/webapp_tests.js
index 86c1f5aa0a..0d1c188e00 100644
--- a/packages/webapp/webapp_tests.js
+++ b/packages/webapp/webapp_tests.js
@@ -55,16 +55,15 @@ const asyncGet =
       ));
 Tinytest.addAsync("webapp - content-type header", async function (test) {
   const staticFiles = WebAppInternals.staticFilesByArch["web.browser"];
+  const staticFilesKeys = Object.keys(staticFiles);
 
-  const cssResource = _.find(
-    _.keys(staticFiles),
+  const cssResource = staticFilesKeys.find(
     function (url) {
       return staticFiles[url].type === "css";
     }
   );
 
-  const jsResource = _.find(
-    _.keys(staticFiles),
+  const jsResource = staticFilesKeys.find(
     function (url) {
       return staticFiles[url].type === "js";
     }
diff --git a/v3-docs/docs/generators/changelog/versions/3.1.0.md b/v3-docs/docs/generators/changelog/versions/3.1.0.md
new file mode 100644
index 0000000000..f7d6ce4f7f
--- /dev/null
+++ b/v3-docs/docs/generators/changelog/versions/3.1.0.md
@@ -0,0 +1,33 @@
+## v3.1.0, 2024-xx-xx
+
+### Highlights
+
+N/A
+
+#### Breaking Changes
+
+N/A
+
+####  Internal API changes
+
+N/A
+
+#### Migration Steps
+
+Please run the following command to update your project:
+
+```bash
+
+meteor update --release 3.1.0
+
+```
+
+
+
+#### Meteor Version Release
+
+N/A
+
+#### Special thanks to
+
+N/A