diff --git a/packages/next/src/client/app-next-dev.ts b/packages/next/src/client/app-next-dev.ts
index 9263f88ac53e7c..51494bd8f41715 100644
--- a/packages/next/src/client/app-next-dev.ts
+++ b/packages/next/src/client/app-next-dev.ts
@@ -1,5 +1,6 @@
 // TODO-APP: hydration warning
 
+import './next-test'
 import './app-webpack'
 
 import { renderAppDevOverlay } from 'next/dist/compiled/next-devtools'
diff --git a/packages/next/src/client/app-next-turbopack.ts b/packages/next/src/client/app-next-turbopack.ts
index 098739c58edaac..ce396f6b80e68f 100644
--- a/packages/next/src/client/app-next-turbopack.ts
+++ b/packages/next/src/client/app-next-turbopack.ts
@@ -1,3 +1,4 @@
+import './next-test'
 import { appBootstrap } from './app-bootstrap'
 import { isRecoverableError } from './react-client-callbacks/on-recoverable-error'
 
diff --git a/packages/next/src/client/next-dev-turbopack.ts b/packages/next/src/client/next-dev-turbopack.ts
index d456485c747ec0..2b221c92554443 100644
--- a/packages/next/src/client/next-dev-turbopack.ts
+++ b/packages/next/src/client/next-dev-turbopack.ts
@@ -1,4 +1,5 @@
 // TODO: Remove use of `any` type.
+import './next-test'
 import { initialize, version, router, emitter } from './'
 import initHMR from './dev/hot-middleware-client'
 
diff --git a/packages/next/src/client/next-dev.ts b/packages/next/src/client/next-dev.ts
index 57d459137cef83..c07ca5351d3fa1 100644
--- a/packages/next/src/client/next-dev.ts
+++ b/packages/next/src/client/next-dev.ts
@@ -1,4 +1,5 @@
 // TODO: Remove use of `any` type.
+import './next-test'
 import './webpack'
 import { initialize, version, router, emitter } from './'
 import initHMR from './dev/hot-middleware-client'
diff --git a/packages/next/src/client/next-test.ts b/packages/next/src/client/next-test.ts
new file mode 100644
index 00000000000000..4f97f021bbcef4
--- /dev/null
+++ b/packages/next/src/client/next-test.ts
@@ -0,0 +1,6 @@
+// For App and Pages Router
+if (process.env.NODE_ENV !== 'production' && process.env.__NEXT_TEST_MODE) {
+  // Our tests don't run with React DevTools attached so the CTA is noisy.
+  // See https://github.com/facebook/react/pull/11448
+  ;(window as any).__REACT_DEVTOOLS_GLOBAL_HOOK__ = { isDisabled: true }
+}