diff --git a/.github/.OwlBot.lock.yaml b/.github/.OwlBot.lock.yaml
index 24943e1..2290457 100644
--- a/.github/.OwlBot.lock.yaml
+++ b/.github/.OwlBot.lock.yaml
@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest
-  digest: sha256:609822e3c09b7a1bd90b99655904609f162cc15acb4704f1edf778284c36f429
+  digest: sha256:0d39e59663287ae929c1d4ccf8ebf7cef9946826c9b86eda7e85d8d752dbb584
 # created: 2024-10-01T19:34:30.797530443Z
diff --git a/.github/release-trigger.yml b/.github/release-trigger.yml
index d4ca941..038fba6 100644
--- a/.github/release-trigger.yml
+++ b/.github/release-trigger.yml
@@ -1 +1,2 @@
 enabled: true
+multiScmName: teeny-request
\ No newline at end of file
diff --git a/.github/sync-repo-settings.yaml b/.github/sync-repo-settings.yaml
index b46e4c4..a013376 100644
--- a/.github/sync-repo-settings.yaml
+++ b/.github/sync-repo-settings.yaml
@@ -8,9 +8,9 @@ branchProtectionRules:
       - "ci/kokoro: Samples test"
       - "ci/kokoro: System test"
       - lint
-      - test (14)
-      - test (16)
       - test (18)
+      - test (20)
+      - test (22)
       - cla/google
       - windows
       - OwlBot Post Processor
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 4892eb2..791891a 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,10 +9,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [14, 16, 18, 20]
+        node: [18, 20, 22]
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node }}
       - run: node --version
@@ -29,10 +29,10 @@ jobs:
   windows:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          node-version: 14
+          node-version: 18
       - run: npm install --engine-strict
       - run: npm test
         env:
@@ -40,19 +40,19 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          node-version: 14
+          node-version: 18
       - run: npm install
       - run: npm run lint
   docs:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          node-version: 14
+          node-version: 18
       - run: npm install
       - run: npm run docs
       - uses: JustinBeckwith/linkinator-action@v1
diff --git a/.kokoro/common.cfg b/.kokoro/common.cfg
index 67dd805..3fe2d24 100644
--- a/.kokoro/common.cfg
+++ b/.kokoro/common.cfg
@@ -16,7 +16,7 @@ build_file: "teeny-request/.kokoro/trampoline_v2.sh"
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 env_vars: {
     key: "TRAMPOLINE_BUILD_FILE"
diff --git a/.kokoro/continuous/node14/common.cfg b/.kokoro/continuous/node18/common.cfg
similarity index 89%
rename from .kokoro/continuous/node14/common.cfg
rename to .kokoro/continuous/node18/common.cfg
index 67dd805..3fe2d24 100644
--- a/.kokoro/continuous/node14/common.cfg
+++ b/.kokoro/continuous/node18/common.cfg
@@ -16,7 +16,7 @@ build_file: "teeny-request/.kokoro/trampoline_v2.sh"
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 env_vars: {
     key: "TRAMPOLINE_BUILD_FILE"
diff --git a/.kokoro/continuous/node14/lint.cfg b/.kokoro/continuous/node18/lint.cfg
similarity index 100%
rename from .kokoro/continuous/node14/lint.cfg
rename to .kokoro/continuous/node18/lint.cfg
diff --git a/.kokoro/continuous/node14/samples-test.cfg b/.kokoro/continuous/node18/samples-test.cfg
similarity index 100%
rename from .kokoro/continuous/node14/samples-test.cfg
rename to .kokoro/continuous/node18/samples-test.cfg
diff --git a/.kokoro/continuous/node14/system-test.cfg b/.kokoro/continuous/node18/system-test.cfg
similarity index 100%
rename from .kokoro/continuous/node14/system-test.cfg
rename to .kokoro/continuous/node18/system-test.cfg
diff --git a/.kokoro/continuous/node14/test.cfg b/.kokoro/continuous/node18/test.cfg
similarity index 100%
rename from .kokoro/continuous/node14/test.cfg
rename to .kokoro/continuous/node18/test.cfg
diff --git a/.kokoro/presubmit/node14/common.cfg b/.kokoro/presubmit/node18/common.cfg
similarity index 89%
rename from .kokoro/presubmit/node14/common.cfg
rename to .kokoro/presubmit/node18/common.cfg
index 67dd805..3fe2d24 100644
--- a/.kokoro/presubmit/node14/common.cfg
+++ b/.kokoro/presubmit/node18/common.cfg
@@ -16,7 +16,7 @@ build_file: "teeny-request/.kokoro/trampoline_v2.sh"
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 env_vars: {
     key: "TRAMPOLINE_BUILD_FILE"
diff --git a/.kokoro/presubmit/node14/samples-test.cfg b/.kokoro/presubmit/node18/samples-test.cfg
similarity index 100%
rename from .kokoro/presubmit/node14/samples-test.cfg
rename to .kokoro/presubmit/node18/samples-test.cfg
diff --git a/.kokoro/presubmit/node14/system-test.cfg b/.kokoro/presubmit/node18/system-test.cfg
similarity index 100%
rename from .kokoro/presubmit/node14/system-test.cfg
rename to .kokoro/presubmit/node18/system-test.cfg
diff --git a/.kokoro/presubmit/node14/test.cfg b/.kokoro/presubmit/node18/test.cfg
similarity index 100%
rename from .kokoro/presubmit/node14/test.cfg
rename to .kokoro/presubmit/node18/test.cfg
diff --git a/.kokoro/release/docs-devsite.cfg b/.kokoro/release/docs-devsite.cfg
index 3e9f8b9..c04d2b9 100644
--- a/.kokoro/release/docs-devsite.cfg
+++ b/.kokoro/release/docs-devsite.cfg
@@ -11,7 +11,7 @@ before_action {
 # doc publications use a Python image.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 
 # Download trampoline resources.
diff --git a/.kokoro/release/docs.cfg b/.kokoro/release/docs.cfg
index 6bf2aab..3b724fa 100644
--- a/.kokoro/release/docs.cfg
+++ b/.kokoro/release/docs.cfg
@@ -11,7 +11,7 @@ before_action {
 # doc publications use a Python image.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 
 # Download trampoline resources.
diff --git a/.kokoro/release/docs.sh b/.kokoro/release/docs.sh
index 1d8f3f4..e9079a6 100755
--- a/.kokoro/release/docs.sh
+++ b/.kokoro/release/docs.sh
@@ -16,7 +16,7 @@
 
 set -eo pipefail
 
-# build jsdocs (Python is installed on the Node 10 docker image).
+# build jsdocs (Python is installed on the Node 18 docker image).
 if [[ -z "$CREDENTIALS" ]]; then
   # if CREDENTIALS are explicitly set, assume we're testing locally
   # and don't set NPM_CONFIG_PREFIX.
diff --git a/.kokoro/release/publish.cfg b/.kokoro/release/publish.cfg
index 3d21b18..a4e27c7 100644
--- a/.kokoro/release/publish.cfg
+++ b/.kokoro/release/publish.cfg
@@ -30,7 +30,7 @@ build_file: "teeny-request/.kokoro/trampoline_v2.sh"
 # Configure the docker image for kokoro-trampoline.
 env_vars: {
     key: "TRAMPOLINE_IMAGE"
-    value: "gcr.io/cloud-devrel-kokoro-resources/node:14-user"
+    value: "gcr.io/cloud-devrel-kokoro-resources/node:18-user"
 }
 
 env_vars: {
diff --git a/.kokoro/samples-test.sh b/.kokoro/samples-test.sh
index 8c5d108..5287753 100755
--- a/.kokoro/samples-test.sh
+++ b/.kokoro/samples-test.sh
@@ -16,7 +16,9 @@
 
 set -eo pipefail
 
-export NPM_CONFIG_PREFIX=${HOME}/.npm-global
+# Ensure the npm global directory is writable, otherwise rebuild `npm`
+mkdir -p $NPM_CONFIG_PREFIX
+npm config -g ls || npm i -g npm@`npm --version`
 
 # Setup service account credentials.
 export GOOGLE_APPLICATION_CREDENTIALS=${KOKORO_GFILE_DIR}/secret_manager/long-door-651-kokoro-system-test-service-account
@@ -56,7 +58,7 @@ fi
 
 # codecov combines coverage across integration and unit tests. Include
 # the logic below for any environment you wish to collect coverage for:
-COVERAGE_NODE=14
+COVERAGE_NODE=18
 if npx check-node-version@3.3.0 --silent --node $COVERAGE_NODE; then
   NYC_BIN=./node_modules/nyc/bin/nyc.js
   if [ -f "$NYC_BIN" ]; then
diff --git a/.kokoro/system-test.sh b/.kokoro/system-test.sh
index 0b3043d..a90d5cf 100755
--- a/.kokoro/system-test.sh
+++ b/.kokoro/system-test.sh
@@ -49,7 +49,7 @@ npm run system-test
 
 # codecov combines coverage across integration and unit tests. Include
 # the logic below for any environment you wish to collect coverage for:
-COVERAGE_NODE=14
+COVERAGE_NODE=18
 if npx check-node-version@3.3.0 --silent --node $COVERAGE_NODE; then
   NYC_BIN=./node_modules/nyc/bin/nyc.js
   if [ -f "$NYC_BIN" ]; then
diff --git a/.kokoro/test.bat b/.kokoro/test.bat
index 0bb1240..caf8256 100644
--- a/.kokoro/test.bat
+++ b/.kokoro/test.bat
@@ -21,7 +21,7 @@ cd ..
 @rem we upgrade Node.js in the image:
 SET PATH=%PATH%;/cygdrive/c/Program Files/nodejs/npm
 
-call nvm use v14.17.3
+call nvm use 18
 call which node
 
 call npm install || goto :error
diff --git a/.kokoro/test.sh b/.kokoro/test.sh
index 862d478..0d9f639 100755
--- a/.kokoro/test.sh
+++ b/.kokoro/test.sh
@@ -39,7 +39,7 @@ npm test
 
 # codecov combines coverage across integration and unit tests. Include
 # the logic below for any environment you wish to collect coverage for:
-COVERAGE_NODE=14
+COVERAGE_NODE=18
 if npx check-node-version@3.3.0 --silent --node $COVERAGE_NODE; then
   NYC_BIN=./node_modules/nyc/bin/nyc.js
   if [ -f "$NYC_BIN" ]; then
diff --git a/.kokoro/trampoline_v2.sh b/.kokoro/trampoline_v2.sh
index 4d03112..5d6cfcc 100755
--- a/.kokoro/trampoline_v2.sh
+++ b/.kokoro/trampoline_v2.sh
@@ -44,7 +44,7 @@
 # the project root.
 #
 # Here is an example for running this script.
-#   TRAMPOLINE_IMAGE=gcr.io/cloud-devrel-kokoro-resources/node:10-user \
+#   TRAMPOLINE_IMAGE=gcr.io/cloud-devrel-kokoro-resources/node:18-user \
 #     TRAMPOLINE_BUILD_FILE=.kokoro/system-test.sh \
 #     .kokoro/trampoline_v2.sh
 
diff --git a/owlbot.py b/owlbot.py
index f184210..6bfddf7 100644
--- a/owlbot.py
+++ b/owlbot.py
@@ -14,4 +14,4 @@
 
 import synthtool.languages.node as node
 
-node.owlbot_main(templates_excludes=["README.md", ".github/ISSUE_TEMPLATE", ".github/scripts", ".github/workflows"])
+node.owlbot_main(templates_excludes=["README.md", ".github/ISSUE_TEMPLATE", ".github/scripts", ".github/workflows/issues-no-repro.yaml", ".github/workflows/response.yaml"])
diff --git a/package.json b/package.json
index 994c9a1..8ba4a31 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "./build/src/index.js",
   "types": "./build/src/index.d.ts",
   "engines": {
-    "node": ">=14"
+    "node": ">=18"
   },
   "scripts": {
     "test": "c8 mocha build/test",
@@ -40,27 +40,26 @@
   "dependencies": {
     "http-proxy-agent": "^5.0.0",
     "https-proxy-agent": "^5.0.0",
-    "node-fetch": "^2.6.9",
-    "stream-events": "^1.0.5",
-    "uuid": "^9.0.0"
+    "node-fetch": "^3.3.2",
+    "stream-events": "^1.0.5"
   },
   "devDependencies": {
     "@babel/plugin-proposal-private-methods": "^7.18.6",
-    "@types/mocha": "^10.0.0",
-    "@types/node-fetch": "^2.5.7",
-    "@types/sinon": "^17.0.0",
-    "@types/uuid": "^9.0.0",
-    "c8": "^9.0.0",
-    "codecov": "^3.1.0",
-    "gts": "^5.0.0",
-    "jsdoc": "^4.0.0",
+    "@types/mocha": "^10.0.10",
+    "@types/node-fetch": "^2.6.12",
+    "@types/sinon": "^17.0.3",
+    "@types/uuid": "^10.0.0",
+    "c8": "^10.1.3",
+    "codecov": "^3.8.3",
+    "gts": "^6.0.2",
+    "jsdoc": "^4.0.4",
     "jsdoc-fresh": "^3.0.0",
     "jsdoc-region-tag": "^3.0.0",
-    "linkinator": "^3.0.0",
-    "mocha": "^10.0.0",
-    "nock": "^13.0.0",
-    "sinon": "^17.0.0",
-    "typescript": "^5.1.6"
+    "linkinator": "^6.1.2",
+    "mocha": "^11.1.0",
+    "nock": "^14.0.1",
+    "sinon": "^19.0.2",
+    "typescript": "^5.7.3"
   },
   "nyc": {
     "exclude": [
diff --git a/src/TeenyStatistics.ts b/src/TeenyStatistics.ts
index 0e3a77d..2182237 100644
--- a/src/TeenyStatistics.ts
+++ b/src/TeenyStatistics.ts
@@ -153,7 +153,7 @@ export class TeenyStatistics {
           this._options.concurrentRequests +
           '. Use the TEENY_REQUEST_WARN_CONCURRENT_REQUESTS environment ' +
           'variable or the concurrentRequests option of teeny-request to ' +
-          'increase or disable (0) this warning.'
+          'increase or disable (0) this warning.',
       );
       warning.type = TeenyStatisticsWarning.CONCURRENT_REQUESTS;
       warning.value = this._concurrentRequests;
@@ -187,7 +187,7 @@ export class TeenyStatistics {
     let concurrentRequests = this.DEFAULT_WARN_CONCURRENT_REQUESTS;
 
     const envConcurrentRequests = Number(
-      process.env.TEENY_REQUEST_WARN_CONCURRENT_REQUESTS
+      process.env.TEENY_REQUEST_WARN_CONCURRENT_REQUESTS,
     );
     if (diConcurrentRequests !== undefined) {
       concurrentRequests = diConcurrentRequests;
diff --git a/src/agents.ts b/src/agents.ts
index 2ae9e74..3369dcf 100644
--- a/src/agents.ts
+++ b/src/agents.ts
@@ -66,7 +66,7 @@ function shouldUseProxyForURI(uri: string): boolean {
  */
 export function getAgent(
   uri: string,
-  reqOpts: Options
+  reqOpts: Options,
 ): HttpAnyAgent | undefined {
   const isHttp = uri.startsWith('http://');
   const proxy =
diff --git a/src/index.ts b/src/index.ts
index 31d87df..737560a 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -17,14 +17,19 @@
 
 import {Agent, AgentOptions as HttpsAgentOptions} from 'https';
 import {AgentOptions as HttpAgentOptions} from 'http';
-import fetch, * as f from 'node-fetch';
+import type * as f from 'node-fetch' with {'resolution-mode': 'import'};
 import {PassThrough, Readable, pipeline} from 'stream';
-import * as uuid from 'uuid';
 import {getAgent} from './agents';
 import {TeenyStatistics} from './TeenyStatistics';
+import {randomUUID} from 'crypto';
 // eslint-disable-next-line @typescript-eslint/no-var-requires
 const streamEvents = require('stream-events');
 
+import type nodeFetch from 'node-fetch' with {'resolution-mode': 'import'};
+
+const fetch = (...args: Parameters<typeof nodeFetch>) =>
+  import('node-fetch').then(({default: fetch}) => fetch(...args));
+
 export interface CoreOptions {
   method?: string;
   timeout?: number;
@@ -152,7 +157,7 @@ function fetchToRequestResponse(opts: f.RequestInit, res: f.Response) {
   const resHeaders = {} as Headers;
   res.headers.forEach((value, key) => (resHeaders[key] = value));
 
-  const response = Object.assign(res.body, {
+  const response = Object.assign(res.body as {}, {
     statusCode: res.status,
     statusMessage: res.statusText,
     request,
@@ -198,7 +203,7 @@ function teenyRequest(reqOpts: Options): Request;
 function teenyRequest(reqOpts: Options, callback: RequestCallback): void;
 function teenyRequest(
   reqOpts: Options,
-  callback?: RequestCallback
+  callback?: RequestCallback,
 ): Request | void {
   const {uri, options} = requestToFetchOptions(reqOpts);
 
@@ -208,7 +213,7 @@ function teenyRequest(
       // TODO: add support for multipart uploads through streaming
       throw new Error('Multipart without callback is not implemented.');
     }
-    const boundary: string = uuid.v4();
+    const boundary: string = randomUUID();
     (options.headers as Headers)['Content-Type'] =
       `multipart/related; boundary=${boundary}`;
     options.body = createMultipartStream(boundary, multipart);
@@ -232,7 +237,7 @@ function teenyRequest(
             },
             (err: Error) => {
               callback(err, response, body);
-            }
+            },
           );
           return;
         }
@@ -244,13 +249,13 @@ function teenyRequest(
           },
           err => {
             callback(err, response, body);
-          }
+          },
         );
       },
       err => {
         teenyRequest.stats.requestFinished();
         callback(err, null!, null);
-      }
+      },
     );
     return;
   }
@@ -287,7 +292,7 @@ function teenyRequest(
       err => {
         teenyRequest.stats.requestFinished();
         requestStream.emit('error', err);
-      }
+      },
     );
 
     // fetch doesn't supply the raw HTTP stream, instead it
@@ -320,7 +325,7 @@ function teenyRequest(
           },
           err => {
             callback(err, response, body);
-          }
+          },
         );
         return;
       }
@@ -333,13 +338,13 @@ function teenyRequest(
         },
         err => {
           callback(err, response, body);
-        }
+        },
       );
     },
     err => {
       teenyRequest.stats.requestFinished();
       callback(err, null!, null);
-    }
+    },
   );
   return;
 }
diff --git a/test/TeenyStatistics.ts b/test/TeenyStatistics.ts
index 90653d2..a554547 100644
--- a/test/TeenyStatistics.ts
+++ b/test/TeenyStatistics.ts
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-import * as assert from 'assert';
+import assert from 'assert';
 import {afterEach, before, beforeEach, describe, it} from 'mocha';
 import * as sinon from 'sinon';
 import {
@@ -65,7 +65,7 @@ describe('TeenyStatistics', () => {
     it('should have default concurrent requests', () => {
       assert.strictEqual(
         TeenyStatistics.DEFAULT_WARN_CONCURRENT_REQUESTS,
-        5000
+        5000,
       );
     });
 
@@ -231,8 +231,8 @@ describe('TeenyStatistics', () => {
       t.requestStarting();
       assert(
         emitWarnStub.calledOnceWith(
-          sinon.match.instanceOf(TeenyStatisticsWarning)
-        )
+          sinon.match.instanceOf(TeenyStatisticsWarning),
+        ),
       );
     });
 
@@ -246,8 +246,8 @@ describe('TeenyStatistics', () => {
       t.requestStarting();
       assert(
         emitWarnStub.calledOnceWith(
-          sinon.match.instanceOf(TeenyStatisticsWarning)
-        )
+          sinon.match.instanceOf(TeenyStatisticsWarning),
+        ),
       );
 
       // shouldn't emit on the next call (i.e. still greater than threshold)
@@ -271,8 +271,8 @@ describe('TeenyStatistics', () => {
       t.requestStarting();
       assert(
         emitWarnStub.calledOnceWith(
-          sinon.match.instanceOf(TeenyStatisticsWarning)
-        )
+          sinon.match.instanceOf(TeenyStatisticsWarning),
+        ),
       );
 
       // let's bring the counter back down
@@ -298,7 +298,7 @@ describe('TeenyStatistics', () => {
       assert.strictEqual(warning.value, 5e3);
       assert.strictEqual(
         warning.type,
-        TeenyStatisticsWarning.CONCURRENT_REQUESTS
+        TeenyStatisticsWarning.CONCURRENT_REQUESTS,
       );
     });
 
@@ -311,15 +311,15 @@ describe('TeenyStatistics', () => {
       const errStr: string = emitWarnStub.firstCall.args[0].toString();
       assert(
         errStr.includes('Possible excessive concurrent requests detected.'),
-        'describes the nature of the warning'
+        'describes the nature of the warning',
       );
       assert(
         errStr.includes('TEENY_REQUEST_WARN_CONCURRENT_REQUESTS'),
-        'mentions env var'
+        'mentions env var',
       );
       assert(
         errStr.includes('concurrentRequests'),
-        'mentions concurrentRequests option'
+        'mentions concurrentRequests option',
       );
       assert(errStr.search(/\b0\b/) !== -1, 'mentions 0');
     });
diff --git a/test/agents.ts b/test/agents.ts
index 7b28068..6ea3f8d 100644
--- a/test/agents.ts
+++ b/test/agents.ts
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-import * as assert from 'assert';
+import assert from 'assert';
 import {describe, it, afterEach} from 'mocha';
 import * as http from 'http';
 import * as https from 'https';
@@ -211,7 +211,7 @@ describe('agents', () => {
                 maxSockets: 1000,
               },
             },
-            defaultOptions
+            defaultOptions,
           );
           const agent = getAgent(uri, options);
           assert.strictEqual(agent!.maxSockets, 1000);
@@ -224,7 +224,7 @@ describe('agents', () => {
                 maxSockets: 1000,
               },
             },
-            defaultOptions
+            defaultOptions,
           );
           const agent = getAgent(uri, options);
           assert.strictEqual(agent, undefined);
@@ -243,7 +243,7 @@ describe('agents', () => {
                 maxSockets: 1000,
               },
             },
-            defaultOptions
+            defaultOptions,
           );
           const agent = getAgent(uri, options);
           assert.strictEqual(agent!.maxSockets, 1000);
@@ -256,7 +256,7 @@ describe('agents', () => {
                 maxSockets: 1000,
               },
             },
-            defaultOptions
+            defaultOptions,
           );
           const agent = getAgent(uri, options);
           assert.strictEqual(agent, undefined);
diff --git a/test/index.ts b/test/index.ts
index ab398ff..1dcd69e 100644
--- a/test/index.ts
+++ b/test/index.ts
@@ -15,10 +15,10 @@
  * limitations under the License.
  */
 
-import * as assert from 'assert';
+import assert from 'assert';
 import {describe, it, afterEach, beforeEach} from 'mocha';
-import * as nock from 'nock';
-import {Readable, PassThrough} from 'stream';
+import nock from 'nock';
+import {Readable} from 'stream';
 import * as sinon from 'sinon';
 import {teenyRequest} from '../src';
 import {TeenyStatistics, TeenyStatisticsWarning} from '../src/TeenyStatistics';
@@ -65,18 +65,18 @@ describe('teeny', () => {
     nock.cleanAll();
   });
 
-  it('should get JSON', done => {
+  it('should get JSON', async () => {
     const scope = mockJson();
     teenyRequest({uri}, (error, response, body) => {
       assert.ifError(error);
       assert.strictEqual(response.statusCode, 200);
       assert.ok(body.hello);
       scope.done();
-      done();
+      // done();
     });
   });
 
-  it('should set defaults', done => {
+  it('should set defaults', async () => {
     const scope = mockJson();
     const defaultRequest = teenyRequest.defaults({timeout: 60000});
     defaultRequest({uri}, (error, response, body) => {
@@ -84,11 +84,10 @@ describe('teeny', () => {
       assert.strictEqual(response.statusCode, 200);
       assert.ok(body.hello);
       scope.done();
-      done();
     });
   });
 
-  it('response event emits object compatible with request module', done => {
+  it('response event emits object compatible with request module', async () => {
     const reqHeaders = {fruit: 'banana'};
     const resHeaders = {veggies: 'carrots'};
     const scope = nock(uri).get('/').reply(202, 'ok', resHeaders);
@@ -103,12 +102,13 @@ describe('teeny', () => {
         });
         assert(res instanceof Readable);
         scope.done();
-        done();
       })
-      .on('error', done);
+      .on('error', err => {
+        throw err;
+      });
   });
 
-  it('should include the request in the response', done => {
+  it('should include the request in the response', async () => {
     const path = '/?dessert=pie';
     const scope = nock(uri).get(path).reply(202);
     const headers = {dinner: 'tacos'};
@@ -119,11 +119,10 @@ describe('teeny', () => {
       assert.deepStrictEqual(req.headers, headers);
       assert.strictEqual(req.href, url);
       scope.done();
-      done();
     });
   });
 
-  it('should not wrap the error', done => {
+  it('should not wrap the error', async () => {
     const scope = nock(uri)
       .get('/')
       .reply(200, '🚨', {'content-type': 'application/json'});
@@ -131,11 +130,10 @@ describe('teeny', () => {
       assert.ok(err);
       assert.ok(err!.message.match(/^invalid json response body/));
       scope.done();
-      done();
     });
   });
 
-  it('should include headers in the response', done => {
+  it('should include headers in the response', async () => {
     const headers = {dinner: 'tacos'};
     const body = {hello: '🌍'};
     const scope = nock(uri).get('/').reply(200, body, headers);
@@ -143,22 +141,20 @@ describe('teeny', () => {
       assert.ifError(err);
       assert.strictEqual(headers['dinner'], res.headers['dinner']);
       scope.done();
-      done();
     });
   });
 
-  it('should accept the forever option', done => {
+  it('should accept the forever option', async () => {
     const scope = nock(uri).get('/').reply(200);
     teenyRequest({uri, forever: true}, (err, res) => {
       assert.ifError(err);
       // eslint-disable-next-line @typescript-eslint/no-explicit-any
       assert.strictEqual((res.request.agent as any).keepAlive, true);
       scope.done();
-      done();
     });
   });
 
-  it('should allow setting compress/gzip to true', done => {
+  it('should allow setting compress/gzip to true', async () => {
     const reqheaders = {
       'Accept-Encoding': 'gzip,deflate',
     };
@@ -168,11 +164,10 @@ describe('teeny', () => {
     teenyRequest({uri, gzip: true}, err => {
       assert.ifError(err);
       scope.done();
-      done();
     });
   });
 
-  it('should allow setting compress/gzip to false', done => {
+  it('should allow setting compress/gzip to false', async () => {
     const badheaders = ['Accept-Encoding'];
 
     const scope = nock(uri, {badheaders}).get('/').reply(200);
@@ -180,13 +175,12 @@ describe('teeny', () => {
     teenyRequest({uri, gzip: false}, err => {
       assert.ifError(err);
       scope.done();
-      done();
     });
   });
 
   const envVars = ['http_proxy', 'https_proxy', 'HTTP_PROXY', 'HTTPS_PROXY'];
   for (const v of envVars) {
-    it(`should respect ${v} environment variable for proxy config`, done => {
+    it(`should respect ${v} environment variable for proxy config`, () => {
       sandbox.stub(process, 'env').value({[v]: 'https://fake.proxy'});
       const expectedBody = {hello: '🌎'};
       const scope = nock(uri).get('/').reply(200, expectedBody);
@@ -195,12 +189,12 @@ describe('teeny', () => {
         assert.ifError(err);
         assert.deepStrictEqual(expectedBody, body);
         assert.ok(res.request.agent instanceof HttpsProxyAgent);
-        return done();
+        return;
       });
     });
   }
 
-  it('should create http proxy if upstream scheme is http', done => {
+  it('should create http proxy if upstream scheme is http', async () => {
     sandbox.stub(process, 'env').value({http_proxy: 'https://fake.proxy'});
     const expectedBody = {hello: '🌎'};
     const scope = nock('http://example.com').get('/').reply(200, expectedBody);
@@ -209,11 +203,11 @@ describe('teeny', () => {
       assert.ifError(err);
       assert.deepStrictEqual(expectedBody, body);
       assert.ok(res.request.agent instanceof HttpProxyAgent);
-      return done();
+      return;
     });
   });
 
-  it('should use proxy if set in request options', done => {
+  it('should use proxy if set in request options', async () => {
     const expectedBody = {hello: '🌎'};
     const scope = nock(uri).get('/').reply(200, expectedBody);
     teenyRequest({uri, proxy: 'https://fake.proxy'}, (err, res, body) => {
@@ -221,44 +215,52 @@ describe('teeny', () => {
       assert.ifError(err);
       assert.deepStrictEqual(expectedBody, body);
       assert.ok(res.request.agent instanceof HttpsProxyAgent);
-      return done();
+      return;
     });
   });
 
   // see: https://github.com/googleapis/nodejs-storage/issues/798
   it('should not throw exception when piped through pumpify', async () => {
     const scope = mockJson();
-    const stream = teenyRequest({uri}).pipe(new PassThrough());
-    let content = '';
+    const stream = teenyRequest({uri});
+    // set the encoding for the returned stream
+    stream.setEncoding('utf8');
+
+    // collect the buffers, then concat later for performance
+    const content: string[] = [];
     for await (const data of stream) {
-      content += data;
+      content.push(data);
     }
-    assert.deepStrictEqual(JSON.parse(content), {hello: '🌍'});
+
+    assert.deepStrictEqual(JSON.parse(content.join('')), {hello: '🌍'});
     scope.done();
   });
 
-  it('should emit response event when called without callback', done => {
+  it('should emit response event when called without callback', async () => {
     const scope = mockJson();
     teenyRequest({uri}).on('response', res => {
       assert.ok(res);
       scope.done();
-      return done();
+      return;
     });
   });
 
-  it('should pipe response stream to user', done => {
+  it('should pipe response stream to user', () => {
     const scope = mockJson();
     teenyRequest({uri})
-      .on('error', done)
+      .on('error', err => {
+        throw err;
+      })
       .on('data', () => {
         scope.done();
-        done();
       });
   });
 
-  it('should not pipe response stream to user unless they ask for it', done => {
+  it('should not pipe response stream to user unless they ask for it', async () => {
     const scope = mockJson();
-    const stream = teenyRequest({uri}).on('error', done);
+    const stream = teenyRequest({uri}).on('error', err => {
+      throw err;
+    });
     stream.on('response', responseStream => {
       // We are using an internal property of Readable to get the number of
       // active readers. The property changed from `pipesCount: number` in
@@ -273,7 +275,6 @@ describe('teeny', () => {
           responseStream.body._readableState.pipes?.length;
         assert.strictEqual(numPipes, 1);
         scope.done();
-        done();
       });
     });
   });
@@ -298,7 +299,7 @@ describe('teeny', () => {
     assert.deepStrictEqual(newOptions, {concurrentRequests: 42});
   });
 
-  it('should emit warning on too many concurrent requests', done => {
+  it('should emit warning on too many concurrent requests', () => {
     statsStub.setOptions.restore();
     statsStub.requestStarting.restore();
     teenyRequest.stats.setOptions({concurrentRequests: 1});
@@ -307,32 +308,29 @@ describe('teeny', () => {
     teenyRequest({uri}, () => {
       assert.ok(emitWarnStub.calledOnce);
       scope.done();
-      done();
     });
   });
 
-  it('should track stats, callback mode, success', done => {
+  it('should track stats, callback mode, success', () => {
     const scope = mockJson();
     teenyRequest({uri}, () => {
       assert.ok(statsStub.requestStarting.calledOnceWithExactly());
       assert.ok(statsStub.requestFinished.calledOnceWithExactly());
       scope.done();
-      done();
     });
   });
 
-  it('should track stats, callback mode, failure', done => {
+  it('should track stats, callback mode, failure', () => {
     const scope = mockError();
     teenyRequest({uri}, err => {
       assert.ok(err);
       assert.ok(statsStub.requestStarting.calledOnceWithExactly());
       assert.ok(statsStub.requestFinished.calledOnceWithExactly());
       scope.done();
-      done();
     });
   });
 
-  it('should track stats, stream mode, success', done => {
+  it('should track stats, stream mode, success', () => {
     const scope = mockJson();
     const readable = teenyRequest({uri});
     assert.ok(statsStub.requestStarting.calledOnceWithExactly());
@@ -340,11 +338,10 @@ describe('teeny', () => {
     readable.once('response', () => {
       assert.ok(statsStub.requestFinished.calledOnceWithExactly());
       scope.done();
-      done();
     });
   });
 
-  it('should track stats, stream mode, failure', done => {
+  it('should track stats, stream mode, failure', () => {
     const scope = mockError();
     const readable = teenyRequest({uri});
     assert.ok(statsStub.requestStarting.calledOnceWithExactly());
@@ -353,11 +350,10 @@ describe('teeny', () => {
       assert.ok(err);
       assert.ok(statsStub.requestFinished.calledOnceWithExactly());
       scope.done();
-      done();
     });
   });
 
-  it('should accept a Buffer as the body of a request', done => {
+  it('should accept a Buffer as the body of a request', () => {
     const scope = nock(uri).post('/', 'hello').reply(200, '🌍');
     teenyRequest(
       {uri, method: 'POST', body: Buffer.from('hello')},
@@ -366,12 +362,11 @@ describe('teeny', () => {
         assert.strictEqual(response.statusCode, 200);
         assert.strictEqual(body, '🌍');
         scope.done();
-        done();
-      }
+      },
     );
   });
 
-  it('should accept a plain string as the body of a request', done => {
+  it('should accept a plain string as the body of a request', () => {
     const scope = nock(uri).post('/', 'hello').reply(200, '🌍');
     teenyRequest(
       {uri, method: 'POST', body: 'hello'},
@@ -380,12 +375,11 @@ describe('teeny', () => {
         assert.strictEqual(response.statusCode, 200);
         assert.strictEqual(body, '🌍');
         scope.done();
-        done();
-      }
+      },
     );
   });
 
-  it('should accept json as the body of a request', done => {
+  it('should accept json as the body of a request', () => {
     const body = {hello: '🌍'};
     const scope = nock(uri).post('/', JSON.stringify(body)).reply(200, '👋');
     teenyRequest({uri, method: 'POST', json: body}, (error, response, body) => {
@@ -393,7 +387,6 @@ describe('teeny', () => {
       assert.strictEqual(response.statusCode, 200);
       assert.strictEqual(body, '👋');
       scope.done();
-      done();
     });
   });
 
@@ -413,11 +406,11 @@ describe('teeny', () => {
         assert.ok(statsStub.requestFinished.calledOnceWithExactly());
         scope.done();
         done();
-      }
+      },
     );
   });
 
-  it.skip('should track stats, multipart mode, failure', done => {
+  it.skip('should track stats, multipart mode, failure', () => {
     const scope = mockError();
     teenyRequest(
       {
@@ -431,30 +424,27 @@ describe('teeny', () => {
         assert.ok(statsStub.requestStarting.calledOnceWithExactly());
         assert.ok(statsStub.requestFinished.calledOnceWithExactly());
         scope.done();
-        done();
-      }
+      },
     );
   });
 
-  it('should throw an exception if uri is an empty string', done => {
+  it('should throw an exception if uri is an empty string', () => {
     assert.throws(
       () => {
         teenyRequest({uri: ''});
       },
       /Missing uri or url in reqOpts/,
-      'Did not throw with expected message'
+      'Did not throw with expected message',
     );
-    done();
   });
 
-  it('should throw an exception if url is an empty string', done => {
+  it('should throw an exception if url is an empty string', () => {
     assert.throws(
       () => {
         teenyRequest({url: ''});
       },
       /Missing uri or url in reqOpts/,
-      'Did not throw with expected message'
+      'Did not throw with expected message',
     );
-    done();
   });
 });
diff --git a/tsconfig.json b/tsconfig.json
index 26f33cd..7e87ff7 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,7 +2,9 @@
   "extends": "./node_modules/gts/tsconfig-google.json",
   "compilerOptions": {
     "rootDir": ".",
-    "outDir": "build"
+    "outDir": "build",
+    "moduleResolution": "nodenext",
+    "module": "nodenext"
   },
   "include": [
     "src/*.ts",