diff --git a/package.json b/package.json
index 0b9dbf4..67fb3a8 100644
--- a/package.json
+++ b/package.json
@@ -39,13 +39,12 @@
   },
   "homepage": "https://github.com/expo/expo-server-sdk-node#readme",
   "dependencies": {
-    "node-fetch": "^2.6.0",
     "promise-limit": "^2.7.0",
-    "promise-retry": "^2.0.1"
+    "promise-retry": "^2.0.1",
+    "undici": "^6.18.1"
   },
   "devDependencies": {
     "@types/jest": "^29.5.12",
-    "@types/node-fetch": "^2.6.11",
     "@types/promise-retry": "^1.1.6",
     "eslint": "^8.57.0",
     "eslint-config-universe": "^12.0.0",
diff --git a/src/ExpoClient.ts b/src/ExpoClient.ts
index b73dbcc..f41ca5b 100644
--- a/src/ExpoClient.ts
+++ b/src/ExpoClient.ts
@@ -6,11 +6,10 @@
  * https://expo.dev
  */
 import assert from 'assert';
-import { Agent } from 'http';
-import fetch, { Headers, Response as FetchResponse } from 'node-fetch';
 import promiseLimit from 'promise-limit';
 import promiseRetry from 'promise-retry';
 import zlib from 'zlib';
+import { Agent, fetch } from 'undici';
 
 import {
   defaultConcurrentRequestLimit,
@@ -205,13 +204,21 @@ export class Expo {
     let requestBody: string | Buffer | undefined;
 
     const sdkVersion = require('../package.json').version;
-    const requestHeaders = new Headers({
+    type RequestHeaders = {
+      Accept: string;
+      'Accept-Encoding': string;
+      'User-Agent': string;
+      Authorization?: string;
+      'Content-Encoding'?: string;
+      'Content-Type'?: string;
+    };
+    const requestHeaders: RequestHeaders = {
       Accept: 'application/json',
       'Accept-Encoding': 'gzip, deflate',
       'User-Agent': `expo-server-sdk-node/${sdkVersion}`,
-    });
+    };
     if (this.accessToken) {
-      requestHeaders.set('Authorization', `Bearer ${this.accessToken}`);
+      requestHeaders['Authorization'] = `Bearer ${this.accessToken}`;
     }
 
     if (options.body != null) {
@@ -219,19 +226,19 @@ export class Expo {
       assert(json != null, `JSON request body must not be null`);
       if (options.shouldCompress(json)) {
         requestBody = await gzipAsync(Buffer.from(json));
-        requestHeaders.set('Content-Encoding', 'gzip');
+        requestHeaders['Content-Encoding'] = 'gzip';
       } else {
         requestBody = json;
       }
 
-      requestHeaders.set('Content-Type', 'application/json');
+      requestHeaders['Content-Type'] = 'application/json';
     }
 
     const response = await fetch(url, {
       method: options.httpMethod,
       body: requestBody,
       headers: requestHeaders,
-      agent: this.httpAgent,
+      dispatcher: this.httpAgent,
     });
 
     if (response.status !== 200) {
@@ -257,7 +264,7 @@ export class Expo {
     return result.data;
   }
 
-  private async parseErrorResponseAsync(response: FetchResponse): Promise<Error> {
+  private async parseErrorResponseAsync(response: Response): Promise<Error> {
     const textBody = await response.text();
     let result: ApiResult;
     try {
@@ -275,7 +282,7 @@ export class Expo {
     return this.getErrorFromResult(response, result);
   }
 
-  private async getTextResponseErrorAsync(response: FetchResponse, text: string): Promise<Error> {
+  private async getTextResponseErrorAsync(response: Response, text: string): Promise<Error> {
     const apiError: ExtensibleError = new Error(
       `Expo responded with an error with status code ${response.status}: ` + text,
     );
@@ -288,7 +295,7 @@ export class Expo {
    * Returns an error for the first API error in the result, with an optional `others` field that
    * contains any other errors.
    */
-  private getErrorFromResult(response: FetchResponse, result: ApiResult): Error {
+  private getErrorFromResult(response: Response, result: ApiResult): Error {
     assert(result.errors && result.errors.length > 0, `Expected at least one error from Expo`);
     const [errorData, ...otherErrorData] = result.errors!;
     const error: ExtensibleError = this.getErrorFromResultError(errorData);
diff --git a/src/__tests__/ExpoClient-test.ts b/src/__tests__/ExpoClient-test.ts
index d3e7f00..201a712 100644
--- a/src/__tests__/ExpoClient-test.ts
+++ b/src/__tests__/ExpoClient-test.ts
@@ -1,5 +1,3 @@
-import fetch from 'node-fetch';
-
 import ExpoClient, { ExpoPushMessage } from '../ExpoClient';
 import { getReceiptsApiUrl, sendApiUrl } from '../ExpoClientValues';
 
diff --git a/yarn.lock b/yarn.lock
index f349c21..a2e487c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -723,14 +723,6 @@
   resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
   integrity sha512-dRLjCWHYg4oaA77cxO64oO+7JwCwnIzkZPdrrC71jQmQtlhM556pwKo5bUzqvZndkVbeFLIIi+9TC40JNF5hNQ==
 
-"@types/node-fetch@^2.6.11":
-  version "2.6.11"
-  resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.6.11.tgz#9b39b78665dae0e82a08f02f4967d62c66f95d24"
-  integrity sha512-24xFj9R5+rfQJLRyM56qh+wnVSYhyXC2tkoBndtY0U+vubqNsYXGjufB2nn8Q6gt0LrARwL6UBtMCSVCwl4B1g==
-  dependencies:
-    "@types/node" "*"
-    form-data "^4.0.0"
-
 "@types/node@*":
   version "20.11.30"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-20.11.30.tgz#9c33467fc23167a347e73834f788f4b9f399d66f"
@@ -1037,11 +1029,6 @@ arraybuffer.prototype.slice@^1.0.3:
     is-array-buffer "^3.0.4"
     is-shared-array-buffer "^1.0.2"
 
-asynckit@^0.4.0:
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
-  integrity sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q==
-
 available-typed-arrays@^1.0.7:
   version "1.0.7"
   resolved "https://registry.yarnpkg.com/available-typed-arrays/-/available-typed-arrays-1.0.7.tgz#a5cc375d6a03c2efc87a553f3e0b1522def14846"
@@ -1271,13 +1258,6 @@ color-name@~1.1.4:
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.4.tgz#c2a09a87acbde69543de6f63fa3995c826c536a2"
   integrity sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==
 
-combined-stream@^1.0.8:
-  version "1.0.8"
-  resolved "https://registry.yarnpkg.com/combined-stream/-/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f"
-  integrity sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==
-  dependencies:
-    delayed-stream "~1.0.0"
-
 concat-map@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
@@ -1389,11 +1369,6 @@ define-properties@^1.1.3, define-properties@^1.2.0, define-properties@^1.2.1:
     has-property-descriptors "^1.0.0"
     object-keys "^1.1.1"
 
-delayed-stream@~1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
-  integrity sha512-ZySD7Nf91aLB0RxL4KGrKHBXl7Eds1DAmEdcoVawXnLD7SDhpNgtuII2aAkg7a7QS41jxPSZ17p4VdGnMHk3MQ==
-
 detect-newline@^3.0.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/detect-newline/-/detect-newline-3.1.0.tgz#576f5dfc63ae1a192ff192d8ad3af6308991b651"
@@ -2000,15 +1975,6 @@ for-each@^0.3.3:
   dependencies:
     is-callable "^1.1.3"
 
-form-data@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/form-data/-/form-data-4.0.0.tgz#93919daeaf361ee529584b9b31664dc12c9fa452"
-  integrity sha512-ETEklSGi5t0QMZuiXoA/Q6vcnxcLQP5vdugSpuAyi6SVGi2clPPp+xgEhuMaHC+zGgn31Kd235W35f7Hykkaww==
-  dependencies:
-    asynckit "^0.4.0"
-    combined-stream "^1.0.8"
-    mime-types "^2.1.12"
-
 fs.realpath@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
@@ -3078,18 +3044,6 @@ micromatch@^4.0.4:
     braces "^3.0.2"
     picomatch "^2.3.1"
 
-mime-db@1.52.0:
-  version "1.52.0"
-  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.52.0.tgz#bbabcdc02859f4987301c856e3387ce5ec43bf70"
-  integrity sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg==
-
-mime-types@^2.1.12:
-  version "2.1.35"
-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.35.tgz#381a871b62a734450660ae3deee44813f70d959a"
-  integrity sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==
-  dependencies:
-    mime-db "1.52.0"
-
 mimic-fn@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
@@ -3129,13 +3083,6 @@ natural-compare@^1.4.0:
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
   integrity sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==
 
-node-fetch@^2.6.0:
-  version "2.7.0"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.7.0.tgz#d0f0fa6e3e2dc1d27efcd8ad99d550bda94d187d"
-  integrity sha512-c4FRfUm/dbcWZ7U+1Wq0AwCyFL+3nt2bEw05wfxSz+DWpWsitgmSgYmy2dQdWyKC1694ELPqMs/YzUSNozLt8A==
-  dependencies:
-    whatwg-url "^5.0.0"
-
 node-int64@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/node-int64/-/node-int64-0.4.0.tgz#87a9065cdb355d3182d8f94ce11188b825c68a3b"
@@ -3823,11 +3770,6 @@ tr46@^1.0.1:
   dependencies:
     punycode "^2.1.0"
 
-tr46@~0.0.3:
-  version "0.0.3"
-  resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
-  integrity sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==
-
 ts-api-utils@^1.0.1:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/ts-api-utils/-/ts-api-utils-1.3.0.tgz#4b490e27129f1e8e686b45cc4ab63714dc60eea1"
@@ -3948,6 +3890,11 @@ undici-types@~5.26.4:
   resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-5.26.5.tgz#bcd539893d00b56e964fd2657a4866b221a65617"
   integrity sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==
 
+undici@^6.18.1:
+  version "6.18.1"
+  resolved "https://registry.yarnpkg.com/undici/-/undici-6.18.1.tgz#8390af4c4bed00fc32cb5f77f1c5e03e3271b8f2"
+  integrity sha512-/0BWqR8rJNRysS5lqVmfc7eeOErcOP4tZpATVjJOojjHZ71gSYVAtFhEmadcIjwMIUehh5NFyKGsXCnXIajtbA==
+
 update-browserslist-db@^1.0.13:
   version "1.0.13"
   resolved "https://registry.yarnpkg.com/update-browserslist-db/-/update-browserslist-db-1.0.13.tgz#3c5e4f5c083661bd38ef64b6328c26ed6c8248c4"
@@ -3979,24 +3926,11 @@ walker@^1.0.8:
   dependencies:
     makeerror "1.0.12"
 
-webidl-conversions@^3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
-  integrity sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==
-
 webidl-conversions@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
   integrity sha512-YQ+BmxuTgd6UXZW3+ICGfyqRyHXVlD5GtQr5+qjiNW7bF0cqrzX500HVXPBOvgXb5YnzDd+h0zqyv61KUD7+Sg==
 
-whatwg-url@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-5.0.0.tgz#966454e8765462e37644d3626f6742ce8b70965d"
-  integrity sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==
-  dependencies:
-    tr46 "~0.0.3"
-    webidl-conversions "^3.0.0"
-
 whatwg-url@^6.5.0:
   version "6.5.0"
   resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-6.5.0.tgz#f2df02bff176fd65070df74ad5ccbb5a199965a8"