diff --git a/package-lock.json b/package-lock.json
index c80ad2b..157bb43 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,7 +16,6 @@
         "chai": "^4.3.7",
         "matchdep": "^2.0.0",
         "mocha": "^10.2.0",
-        "mockery": "^2.1.0",
         "nyc": "^15.1.0",
         "semantic-release": "^21.0.2",
         "sinon": "^15.0.4",
@@ -6990,12 +6989,6 @@
       "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
       "dev": true
     },
-    "node_modules/mockery": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/mockery/-/mockery-2.1.0.tgz",
-      "integrity": "sha512-9VkOmxKlWXoDO/h1jDZaS4lH33aWfRiJiNT/tKj+8OGzrcFDLo8d0syGdbsc3Bc4GvRXPb+NMMvojotmuGJTvA==",
-      "dev": true
-    },
     "node_modules/modify-values": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/modify-values/-/modify-values-1.0.1.tgz",
diff --git a/package.json b/package.json
index fef24c2..977ae0d 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,6 @@
     "chai": "^4.3.7",
     "matchdep": "^2.0.0",
     "mocha": "^10.2.0",
-    "mockery": "^2.1.0",
     "nyc": "^15.1.0",
     "semantic-release": "^21.0.2",
     "sinon": "^15.0.4",
diff --git a/test/fixtures/RequireMocker.js b/test/fixtures/RequireMocker.js
new file mode 100644
index 0000000..291d1d3
--- /dev/null
+++ b/test/fixtures/RequireMocker.js
@@ -0,0 +1,19 @@
+const Module = require('module')
+const originalRequire = Module.prototype.require
+const hookModuleToReturnMockFromRequire = (module, mock) => {
+  Module.prototype.require = function () {
+    if (arguments[0] === module) {
+      return mock
+    }
+    return originalRequire.apply(this, arguments)
+  }
+}
+
+const resetModuleMocks = () => {
+  Module.prototype.require = originalRequire
+}
+
+module.exports = {
+  hook: hookModuleToReturnMockFromRequire,
+  reset: resetModuleMocks
+}
diff --git a/test/help_message_visibility_test.js b/test/help_message_visibility_test.js
index da389d9..3407218 100644
--- a/test/help_message_visibility_test.js
+++ b/test/help_message_visibility_test.js
@@ -6,7 +6,7 @@ const path = require('path')
 
 const chai = require('chai')
 const expect = chai.expect
-const mockery = require('mockery')
+const { hook, reset } = require('./fixtures/RequireMocker.js')
 
 chai.use(require('sinon-chai'))
 
@@ -31,11 +31,7 @@ const newTestRobot = function newTestRobot () {
 
 describe('help in private', () => describe('message visibility', () => {
   beforeEach(function () {
-    mockery.enable({
-      warnOnReplace: false,
-      warnOnUnregistered: false
-    })
-    mockery.registerMock('hubot-mock-adapter', require('./fixtures/MockAdapter.js'))
+    hook('hubot-mock-adapter', require('./fixtures/MockAdapter.js'))
     this.robot = newTestRobot()
     this.robot.run()
     this.user = this.robot.brain.userForName('john')
@@ -43,7 +39,7 @@ describe('help in private', () => describe('message visibility', () => {
 
   afterEach(function () {
     this.robot.shutdown()
-    mockery.disable()
+    reset()
   })
 
   context('when HUBOT_HELP_REPLY_IN_PRIVATE is unset', () => it('replies in the same room', function (done) {
diff --git a/test/help_test.js b/test/help_test.js
index bf62acf..79d2ff4 100644
--- a/test/help_test.js
+++ b/test/help_test.js
@@ -6,7 +6,7 @@ const path = require('path')
 
 const chai = require('chai')
 const expect = chai.expect
-const mockery = require('mockery')
+const { hook, reset } = require('./fixtures/RequireMocker.js')
 
 chai.use(require('sinon-chai'))
 
@@ -30,11 +30,7 @@ const newTestRobot = function newTestRobot () {
 
 describe('help', () => describe('getHelpCommands', () => {
   beforeEach(function () {
-    mockery.enable({
-      warnOnReplace: false,
-      warnOnUnregistered: false
-    })
-    mockery.registerMock('hubot-mock-adapter', require('./fixtures/MockAdapter.js'))
+    hook('hubot-mock-adapter', require('./fixtures/MockAdapter.js'))
     this.robot = newTestRobot()
     this.robot.run()
     this.user = this.robot.brain.userForName('john')
@@ -42,7 +38,7 @@ describe('help', () => describe('getHelpCommands', () => {
 
   afterEach(function () {
     this.robot.shutdown()
-    mockery.disable()
+    reset()
   })
 
   context('when HUBOT_HELP_HIDDEN_COMMANDS is not set', () => it('lists all commands', function (done) {