diff --git a/.github/workflows/run-tests.yaml b/.github/workflows/run-tests.yaml
new file mode 100644
index 0000000..f439f2d
--- /dev/null
+++ b/.github/workflows/run-tests.yaml
@@ -0,0 +1,92 @@
+on: [ push, pull_request ]
+
+name: Tests
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-node@v4
+    - run: npm install # install eslint
+    - run: npm run lint
+
+  test-old-node:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node_version: [ 6.4.0 ]
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Use Node.js ${{ matrix.node_version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node_version }}
+
+    # Note: no npm ci / npm install:
+    # The package has no non-dev dependencies.
+    # Old Node.js does not have built-in coverage reporting, so we use external packages.
+    # - run: npm install coveralls@3.1.1 # TODO: can be removed? Not needed with github action?
+    - run: npm install istanbul@0.4.5
+    # 6.2.0 is supposedly compatible with v6, but fails to install.
+    # So we use a (working) version referenced by proxy-from-env@1.0.0
+    - run: npm install mocha@2.4.5
+
+    # test-coverage will also run the tests, but does not print helpful output upon test failure.
+    # So we also run the tests separately.
+    - run: ./node_modules/.bin/mocha ./test.js --reporter spec
+    # ^ instead of: npm test
+
+    - run: ./node_modules/.bin/istanbul cover ./node_modules/.bin/_mocha -- --reporter spec # creates coverage/lcov.info
+    # ^ instead of: npm run test-coverage
+
+    - name: Send coverage for Node ${{ matrix.node_version }} to Coveralls
+      uses: coverallsapp/github-action@v2
+      with:
+        parallel: true
+        file: coverage/lcov.info
+        flag-name: coverage-node-${{ matrix.node_version }}
+
+  test-recent-node:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node_version: [ 20 ]
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Use Node.js ${{ matrix.node_version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node_version }}
+
+    # Note: no npm ci / npm install:
+    # The package has no non-dev dependencies.
+    # We rely on Node.js's built-in test module and reporter,
+    # and do not require any dev dependencies either.
+
+    # test-coverage will also run the tests, but does not print helpful output upon test failure.
+    # So we also run the tests separately.
+    - run: npm test
+
+    # note: --experimental-test-coverage requires Node v18.15.0+
+    # note: --test-reporter=lcov requires Node v20.11.0+ (https://github.com/nodejs/node/pull/50018)
+    - run: npm run test-coverage
+
+    - name: Send coverage for Node ${{ matrix.node_version }} to Coveralls
+      uses: coverallsapp/github-action@v2
+      with:
+        parallel: true
+        file: lcov.info
+        flag-name: coverage-node-${{ matrix.node_version }}
+
+  coveralls:
+    name: Report to Coveralls
+    needs: [ test-old-node, test-recent-node ]
+    if: ${{ always() }}
+    runs-on: ubuntu-latest
+    steps:
+    - uses: coverallsapp/github-action@v2
+      with:
+        parallel-finished: true
diff --git a/.gitignore b/.gitignore
index 68e7bda..04501bb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *.swp
 coverage/
+lcov.info
 node_modules/
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 64a05f9..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,10 +0,0 @@
-language: node_js
-node_js:
-  - node
-  - lts/*
-script:
-  - npm run lint
-  # test-coverage will also run the tests, but does not print helpful output upon test failure.
-  # So we also run the tests separately.
-  - npm run test
-  - npm run test-coverage && cat coverage/lcov.info | ./node_modules/.bin/coveralls && rm -rf coverage
diff --git a/README.md b/README.md
index e82520c..50a9de3 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # proxy-from-env
 
-[![Build Status](https://travis-ci.org/Rob--W/proxy-from-env.svg?branch=master)](https://travis-ci.org/Rob--W/proxy-from-env)
+![Build Status](https://github.com/Rob--W/proxy-from-env/actions/workflows/run-tests.yaml/badge.svg?branch=master)
 [![Coverage Status](https://coveralls.io/repos/github/Rob--W/proxy-from-env/badge.svg?branch=master)](https://coveralls.io/github/Rob--W/proxy-from-env?branch=master)
 
 `proxy-from-env` is a Node.js package that exports a function (`getProxyForUrl`)
diff --git a/package.json b/package.json
index be2b845..39d2c67 100644
--- a/package.json
+++ b/package.json
@@ -5,8 +5,9 @@
   "main": "index.js",
   "scripts": {
     "lint": "eslint *.js",
-    "test": "mocha ./test.js --reporter spec",
-    "test-coverage": "istanbul cover ./node_modules/.bin/_mocha -- --reporter spec"
+    "test": "node --test ./test.js",
+    "test-coverage": "node --experimental-test-coverage --test-reporter=lcov --test-reporter-destination=lcov.info ./test.js",
+    "test-coverage-as-html": "npm run test-gen-lcov && genhtml lcov.info -o coverage/"
   },
   "repository": {
     "type": "git",
@@ -26,9 +27,6 @@
   },
   "homepage": "https://github.com/Rob--W/proxy-from-env#readme",
   "devDependencies": {
-    "coveralls": "^3.0.9",
-    "eslint": "^6.8.0",
-    "istanbul": "^0.4.5",
-    "mocha": "^7.1.0"
+    "eslint": "^6.8.0"
   }
 }
diff --git a/test.js b/test.js
index abf6542..1af16e8 100644
--- a/test.js
+++ b/test.js
@@ -1,6 +1,13 @@
 /* eslint max-statements:0 */
 'use strict';
 
+// For compatibility with old Node that
+// The node:test modules is only supported in Node v16.17.0+.
+// To run in earlier versions, run this file through mocha instead,
+// e.g. mocha ./test.js --reporter spec
+var describe = global.describe || require('node:test').describe;
+var it = global.it || require('node:test').it;
+
 var assert = require('assert');
 var parseUrl = require('url').parse;