diff --git a/src/presets/cloudflare.ts b/src/presets/cloudflare.ts
index 202f58a..dba274a 100644
--- a/src/presets/cloudflare.ts
+++ b/src/presets/cloudflare.ts
@@ -19,6 +19,7 @@ const cloudflareNodeCompatModules = [
   "stream/promises",
   "stream/web",
   "string_decoder",
+  "util/types",
   "zlib",
 ];
 
@@ -33,7 +34,6 @@ const hybridNodeCompatModules = [
   "process",
   "timers",
   "util",
-  "util/types",
 ];
 
 const cloudflarePreset: Preset = {
diff --git a/src/runtime/node/util/$cloudflare.ts b/src/runtime/node/util/$cloudflare.ts
index 6b48ce6..43b60dc 100644
--- a/src/runtime/node/util/$cloudflare.ts
+++ b/src/runtime/node/util/$cloudflare.ts
@@ -49,7 +49,6 @@ import {
   isUndefined,
   parseEnv,
   styleText,
-  types as unenvUtilTypes,
 } from "./index";
 
 const workerdUtil = process.getBuiltinModule("node:util");
@@ -81,12 +80,7 @@ export const {
   transferableAbortSignal,
 } = workerdUtil;
 
-// TODO(cloudflare): we should just implement this in workerd and drop this special case.
-export const types = {
-  ...workerdUtil.types,
-  isExternal: unenvUtilTypes.isExternal,
-  isAnyArrayBuffer: workerdUtil.types.isAnyArrayBuffer,
-} satisfies typeof nodeUtil.types;
+export const types = workerdUtil.types;
 
 export default {
   /**
diff --git a/src/runtime/node/util/internal/types.ts b/src/runtime/node/util/internal/types.ts
index d357674..cdb71f8 100644
--- a/src/runtime/node/util/internal/types.ts
+++ b/src/runtime/node/util/internal/types.ts
@@ -1,9 +1,7 @@
 import type utilTypes from "node:util/types";
 import { notImplemented } from "../../../_internal/utils";
 
-export const isExternal = notImplemented<typeof utilTypes.isExternal>(
-  "util.types.isExternal",
-);
+export const isExternal: typeof utilTypes.isExternal = (_obj) => false;
 
 export const isDate: typeof utilTypes.isDate = (val): val is Date =>
   val instanceof Date;
diff --git a/src/runtime/node/util/types/$cloudflare.ts b/src/runtime/node/util/types/$cloudflare.ts
deleted file mode 100644
index a59d399..0000000
--- a/src/runtime/node/util/types/$cloudflare.ts
+++ /dev/null
@@ -1,106 +0,0 @@
-import type nodeUtilTypes from "node:util/types";
-
-// TODO(cloudflare): we should just implement this in workerd and drop this whole file.
-export { isExternal } from "./index";
-
-import { isExternal } from "./index";
-
-const workerdUtil = process.getBuiltinModule("node:util");
-
-export const {
-  isAnyArrayBuffer,
-  isArgumentsObject,
-  isArrayBuffer,
-  isArrayBufferView,
-  isAsyncFunction,
-  isBigInt64Array,
-  // @ts-expect-error missing types?
-  isBigIntObject,
-  isBigUint64Array,
-  isBooleanObject,
-  isBoxedPrimitive,
-  isCryptoKey,
-  isDataView,
-  isDate,
-  isFloat32Array,
-  isFloat64Array,
-  isGeneratorFunction,
-  isGeneratorObject,
-  isInt16Array,
-  isInt32Array,
-  isInt8Array,
-  isKeyObject,
-  isMap,
-  isMapIterator,
-  isModuleNamespaceObject,
-  isNativeError,
-  isNumberObject,
-  isPromise,
-  isProxy,
-  isRegExp,
-  isSet,
-  isSetIterator,
-  isSharedArrayBuffer,
-  isStringObject,
-  isSymbolObject,
-  isTypedArray,
-  isUint16Array,
-  isUint32Array,
-  isUint8Array,
-  isUint8ClampedArray,
-  isWeakMap,
-  isWeakSet,
-} = workerdUtil.types;
-
-export default {
-  /**
-   * manually unroll unenv-polyfilled-symbols to make it tree-shakeable
-   */
-  isExternal,
-
-  /**
-   * manually unroll workerd-polyfilled-symbols to make it tree-shakeable
-   */
-  isAnyArrayBuffer,
-  isArgumentsObject,
-  isArrayBuffer,
-  isArrayBufferView,
-  isAsyncFunction,
-  isBigInt64Array,
-  // @ts-expect-error undocumented public API
-  isBigIntObject,
-  isBigUint64Array,
-  isBooleanObject,
-  isBoxedPrimitive,
-  isCryptoKey,
-  isDataView,
-  isDate,
-  isFloat32Array,
-  isFloat64Array,
-  isGeneratorFunction,
-  isGeneratorObject,
-  isInt16Array,
-  isInt32Array,
-  isInt8Array,
-  isKeyObject,
-  isMap,
-  isMapIterator,
-  isModuleNamespaceObject,
-  isNativeError,
-  isNumberObject,
-  isPromise,
-  isProxy,
-  isRegExp,
-  isSet,
-  isSetIterator,
-  isSharedArrayBuffer,
-  isStringObject,
-  isSymbolObject,
-  isTypedArray,
-  isUint16Array,
-  isUint32Array,
-  isUint8Array,
-  isUint8ClampedArray,
-  isWeakMap,
-  isWeakSet,
-} satisfies typeof nodeUtilTypes;
diff --git a/test/workerd/tests.mjs b/test/workerd/tests.mjs
index aeda375..4eba227 100644
--- a/test/workerd/tests.mjs
+++ b/test/workerd/tests.mjs
@@ -62,3 +62,13 @@ export const buffer_implements = {
     assert.ok(new buffer.Blob([]));
   },
 };
+
+// --- node:util
+
+export const util_implements = {
+  async test() {
+    const { types } = await import("unenv/runtime/node/util");
+    assert.strictEqual(types.isExternal("hello world"), false);
+    assert.strictEqual(types.isAnyArrayBuffer(new ArrayBuffer(0)), true);
+  },
+};