diff --git a/flow-libs/abortcontroller-polyfill.js.flow b/flow-libs/abortcontroller-polyfill.js.flow
deleted file mode 100644
index ae721895856..00000000000
--- a/flow-libs/abortcontroller-polyfill.js.flow
+++ /dev/null
@@ -1,15 +0,0 @@
-// @flow
-
-declare module 'abortcontroller-polyfill/dist/cjs-ponyfill' {
-  // Identical to https://github.com/facebook/flow/blob/v0.92.1/lib/bom.js#L1048
-  declare export class AbortController {
-    constructor(): void;
-    +signal: AbortSignal;
-    abort(): void;
-  }
-
-  declare export class AbortSignal extends EventTarget {
-    +aborted: boolean;
-    onabort: (event: 'abort') => mixed;
-  }
-}
diff --git a/packages/core/cache/src/FSCache.js b/packages/core/cache/src/FSCache.js
index dd807336dc9..90e9a136b0a 100644
--- a/packages/core/cache/src/FSCache.js
+++ b/packages/core/cache/src/FSCache.js
@@ -5,7 +5,6 @@ import type {FilePath} from '@parcel/types';
 import type {FileSystem} from '@parcel/fs';
 import type {Cache} from './types';
 
-import type {AbortSignal} from 'abortcontroller-polyfill/dist/cjs-ponyfill';
 import stream from 'stream';
 import path from 'path';
 import {promisify} from 'util';
diff --git a/packages/core/cache/src/LMDBCache.js b/packages/core/cache/src/LMDBCache.js
index 382fa29cb95..b2eef533203 100644
--- a/packages/core/cache/src/LMDBCache.js
+++ b/packages/core/cache/src/LMDBCache.js
@@ -3,7 +3,6 @@ import type {FilePath} from '@parcel/types';
 import type {Cache} from './types';
 import type {Readable, Writable} from 'stream';
 
-import type {AbortSignal} from 'abortcontroller-polyfill/dist/cjs-ponyfill';
 import stream from 'stream';
 import path from 'path';
 import {promisify} from 'util';
diff --git a/packages/core/cache/src/types.js b/packages/core/cache/src/types.js
index 56a545b40ff..c9dab9535b6 100644
--- a/packages/core/cache/src/types.js
+++ b/packages/core/cache/src/types.js
@@ -1,6 +1,5 @@
 // @flow
 import type {Readable} from 'stream';
-import type {AbortSignal} from 'abortcontroller-polyfill/dist/cjs-ponyfill';
 
 export interface Cache {
   ensure(): Promise<void>;
diff --git a/packages/core/core/package.json b/packages/core/core/package.json
index 67fb61d364e..9060a55553c 100644
--- a/packages/core/core/package.json
+++ b/packages/core/core/package.json
@@ -40,7 +40,6 @@
     "@parcel/types": "2.12.0",
     "@parcel/utils": "2.12.0",
     "@parcel/workers": "2.12.0",
-    "abortcontroller-polyfill": "^1.1.9",
     "base-x": "^3.0.8",
     "browserslist": "^4.6.6",
     "clone": "^2.1.1",
diff --git a/packages/core/core/src/Parcel.js b/packages/core/core/src/Parcel.js
index 3d94666ce82..7812c2e3dc1 100644
--- a/packages/core/core/src/Parcel.js
+++ b/packages/core/core/src/Parcel.js
@@ -16,7 +16,6 @@ import type {ParcelOptions} from './types';
 // eslint-disable-next-line no-unused-vars
 import type {FarmOptions, SharedReference} from '@parcel/workers';
 import type {Diagnostic} from '@parcel/diagnostic';
-import type {AbortSignal} from 'abortcontroller-polyfill/dist/cjs-ponyfill';
 
 import invariant from 'assert';
 import ThrowableDiagnostic, {anyToDiagnostic} from '@parcel/diagnostic';
@@ -32,7 +31,6 @@ import dumpGraphToGraphViz from './dumpGraphToGraphViz';
 import resolveOptions from './resolveOptions';
 import {ValueEmitter} from '@parcel/events';
 import {registerCoreWithSerializer} from './registerCoreWithSerializer';
-import {AbortController} from 'abortcontroller-polyfill/dist/cjs-ponyfill';
 import {PromiseQueue} from '@parcel/utils';
 import ParcelConfig from './ParcelConfig';
 import logger from '@parcel/logger';
diff --git a/packages/core/core/src/RequestTracker.js b/packages/core/core/src/RequestTracker.js
index efb6ef42077..0c71775ad80 100644
--- a/packages/core/core/src/RequestTracker.js
+++ b/packages/core/core/src/RequestTracker.js
@@ -1,6 +1,5 @@
 // @flow strict-local
 
-import type {AbortSignal} from 'abortcontroller-polyfill/dist/cjs-ponyfill';
 import type {Async, EnvMap} from '@parcel/types';
 import type {Options as WatcherOptions, Event} from '@parcel/watcher';
 import type WorkerFarm from '@parcel/workers';
diff --git a/packages/core/core/src/requests/BundleGraphRequest.js b/packages/core/core/src/requests/BundleGraphRequest.js
index b6d02bb8ce2..466f76a1a1c 100644
--- a/packages/core/core/src/requests/BundleGraphRequest.js
+++ b/packages/core/core/src/requests/BundleGraphRequest.js
@@ -13,7 +13,6 @@ import type {
   ParcelOptions,
 } from '../types';
 import type {ConfigAndCachePath} from './ParcelConfigRequest';
-import type {AbortSignal} from 'abortcontroller-polyfill/dist/cjs-ponyfill';
 
 import invariant from 'assert';
 import assert from 'assert';
diff --git a/packages/core/core/src/requests/ParcelBuildRequest.js b/packages/core/core/src/requests/ParcelBuildRequest.js
index 04d22ca4548..b3057590783 100644
--- a/packages/core/core/src/requests/ParcelBuildRequest.js
+++ b/packages/core/core/src/requests/ParcelBuildRequest.js
@@ -3,7 +3,6 @@
 import type {ContentKey} from '@parcel/graph';
 import type {Async} from '@parcel/types';
 import type {SharedReference} from '@parcel/workers';
-import type {AbortSignal} from 'abortcontroller-polyfill/dist/cjs-ponyfill';
 
 import type {StaticRunOpts} from '../RequestTracker';
 import type {Asset, AssetGroup, PackagedBundleInfo} from '../types';
diff --git a/packages/core/core/src/utils.js b/packages/core/core/src/utils.js
index baa0266c8c4..c43c06741d9 100644
--- a/packages/core/core/src/utils.js
+++ b/packages/core/core/src/utils.js
@@ -1,6 +1,5 @@
 // @flow strict-local
 
-import type {AbortSignal} from 'abortcontroller-polyfill/dist/cjs-ponyfill';
 import type {
   FilePath,
   FileCreateInvalidation,
diff --git a/packages/core/core/test/RequestTracker.test.js b/packages/core/core/test/RequestTracker.test.js
index c729768b934..8315445b00f 100644
--- a/packages/core/core/test/RequestTracker.test.js
+++ b/packages/core/core/test/RequestTracker.test.js
@@ -1,7 +1,6 @@
 // @flow strict-local
 
 import assert from 'assert';
-import {AbortController} from 'abortcontroller-polyfill/dist/cjs-ponyfill';
 import nullthrows from 'nullthrows';
 import RequestTracker, {type RunAPI} from '../src/RequestTracker';
 import WorkerFarm from '@parcel/workers';
diff --git a/yarn.lock b/yarn.lock
index 54c452de05d..6798ef587ed 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2967,11 +2967,6 @@ abbrev@^2.0.0:
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-2.0.0.tgz#cf59829b8b4f03f89dda2771cb7f3653828c89bf"
   integrity sha512-6/mh1E2u2YgEsCHdY0Yx5oW+61gZU+1vXaoiHHrpKeuRNNgFvS+/jrwHiQhB5apAf5oB7UB7E19ol2R2LKH8hQ==
 
-abortcontroller-polyfill@^1.1.9:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/abortcontroller-polyfill/-/abortcontroller-polyfill-1.4.0.tgz#0d5eb58e522a461774af8086414f68e1dda7a6c4"
-  integrity sha512-3ZFfCRfDzx3GFjO6RAkYx81lPGpUS20ISxux9gLxuKnqafNcFQo59+IoZqpO2WvQlyc287B62HDnDdNYRmlvWA==
-
 acorn-globals@^6.0.0:
   version "6.0.0"
   resolved "https://registry.yarnpkg.com/acorn-globals/-/acorn-globals-6.0.0.tgz#46cdd39f0f8ff08a876619b55f5ac8a6dc770b45"