diff --git a/packages/shared/ReactDOMFrameScheduling.js b/packages/shared/ReactDOMFrameScheduling.js
index 86ddc9360f..8e50bee944 100644
--- a/packages/shared/ReactDOMFrameScheduling.js
+++ b/packages/shared/ReactDOMFrameScheduling.js
@@ -17,6 +17,7 @@
 
 import type {Deadline} from 'react-reconciler';
 
+import {alwaysUseRequestIdleCallbackPolyfill} from 'shared/ReactFeatureFlags';
 import ExecutionEnvironment from 'fbjs/lib/ExecutionEnvironment';
 import warning from 'fbjs/lib/warning';
 
@@ -69,6 +70,7 @@ if (!ExecutionEnvironment.canUseDOM) {
     clearTimeout(timeoutID);
   };
 } else if (
+  alwaysUseRequestIdleCallbackPolyfill ||
   typeof requestIdleCallback !== 'function' ||
   typeof cancelIdleCallback !== 'function'
 ) {
diff --git a/packages/shared/ReactFeatureFlags.js b/packages/shared/ReactFeatureFlags.js
index 18f1495cad..b20bd56a39 100644
--- a/packages/shared/ReactFeatureFlags.js
+++ b/packages/shared/ReactFeatureFlags.js
@@ -38,6 +38,8 @@ export const replayFailedUnitOfWorkWithInvokeGuardedCallback = __DEV__;
 // Warn about deprecated, async-unsafe lifecycles; relates to RFC #6:
 export const warnAboutDeprecatedLifecycles = false;
 
+export const alwaysUseRequestIdleCallbackPolyfill = false;
+
 // Only used in www builds.
 export function addUserTimingListener() {
   invariant(false, 'Not implemented.');
diff --git a/packages/shared/forks/ReactFeatureFlags.native-fabric.js b/packages/shared/forks/ReactFeatureFlags.native-fabric.js
index dff3f834e9..06d87c3182 100644
--- a/packages/shared/forks/ReactFeatureFlags.native-fabric.js
+++ b/packages/shared/forks/ReactFeatureFlags.native-fabric.js
@@ -24,6 +24,7 @@ export const replayFailedUnitOfWorkWithInvokeGuardedCallback = __DEV__;
 export const enableMutatingReconciler = false;
 export const enableNoopReconciler = false;
 export const enablePersistentReconciler = true;
+export const alwaysUseRequestIdleCallbackPolyfill = false;
 
 // Only used in www builds.
 export function addUserTimingListener() {
diff --git a/packages/shared/forks/ReactFeatureFlags.native.js b/packages/shared/forks/ReactFeatureFlags.native.js
index 4a50214497..1c0ef01928 100644
--- a/packages/shared/forks/ReactFeatureFlags.native.js
+++ b/packages/shared/forks/ReactFeatureFlags.native.js
@@ -27,6 +27,7 @@ export const enableUserTimingAPI = __DEV__;
 export const enableMutatingReconciler = true;
 export const enableNoopReconciler = false;
 export const enablePersistentReconciler = false;
+export const alwaysUseRequestIdleCallbackPolyfill = false;
 
 // Only used in www builds.
 export function addUserTimingListener() {
diff --git a/packages/shared/forks/ReactFeatureFlags.persistent.js b/packages/shared/forks/ReactFeatureFlags.persistent.js
index 86b60c97b4..d9aa80be57 100644
--- a/packages/shared/forks/ReactFeatureFlags.persistent.js
+++ b/packages/shared/forks/ReactFeatureFlags.persistent.js
@@ -25,6 +25,7 @@ export const replayFailedUnitOfWorkWithInvokeGuardedCallback = __DEV__;
 export const enableMutatingReconciler = false;
 export const enableNoopReconciler = false;
 export const enablePersistentReconciler = true;
+export const alwaysUseRequestIdleCallbackPolyfill = false;
 
 // Only used in www builds.
 export function addUserTimingListener() {
diff --git a/packages/shared/forks/ReactFeatureFlags.www.js b/packages/shared/forks/ReactFeatureFlags.www.js
index c45ba2f06f..5cc50cc07f 100644
--- a/packages/shared/forks/ReactFeatureFlags.www.js
+++ b/packages/shared/forks/ReactFeatureFlags.www.js
@@ -17,6 +17,7 @@ export const {
   debugRenderPhaseSideEffectsForStrictMode,
   warnAboutDeprecatedLifecycles,
   replayFailedUnitOfWorkWithInvokeGuardedCallback,
+  alwaysUseRequestIdleCallbackPolyfill,
 } = require('ReactFeatureFlags');
 
 // The rest of the flags are static for better dead code elimination.