diff --git a/.github/funding.yml b/.github/funding.yml
deleted file mode 100644
index 1a630e9..0000000
--- a/.github/funding.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-github: sindresorhus
-open_collective: sindresorhus
-custom: https://sindresorhus.com/donate
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c1870cf..d36e1a8 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,10 +12,9 @@ jobs:
         node-version:
           - 14
           - 12
-          - 10
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install
diff --git a/index.d.ts b/index.d.ts
index 42db357..bb7466d 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -5,7 +5,7 @@ No other code will execute while it's sleeping, not even asynchronous code.
 
 @example
 ```
-import sleepSynchronously = require('sleep-synchronously');
+import sleepSynchronously from 'sleep-synchronously';
 
 console.log(new Date());
 //=> Sun Aug 16 2020 14:28:54 GMT+0200 (Central European Summer Time)
@@ -16,6 +16,4 @@ console.log(new Date());
 //=> Sun Aug 16 2020 14:28:56 GMT+0200 (Central European Summer Time)
 ```
 */
-declare function sleepSynchronously(milliseconds: number): void;
-
-export = sleepSynchronously;
+export default function sleepSynchronously(milliseconds: number): void;
diff --git a/index.js b/index.js
index 2a55691..2e88b12 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,3 @@
-'use strict';
-
-module.exports = milliseconds => {
+export default function sleepSynchronously(milliseconds) {
 	Atomics.wait(new Int32Array(new SharedArrayBuffer(4)), 0, 0, milliseconds);
-};
+}
diff --git a/index.test-d.ts b/index.test-d.ts
index 5d4e4b8..047ec13 100644
--- a/index.test-d.ts
+++ b/index.test-d.ts
@@ -1,4 +1,5 @@
 import {expectType} from 'tsd';
-import sleepSynchronously = require('.');
+import sleepSynchronously from './index.js';
 
+// eslint-disable-next-line @typescript-eslint/no-confusing-void-expression
 expectType<void>(sleepSynchronously(200));
diff --git a/package.json b/package.json
index 5e3ddd0..89f9af5 100644
--- a/package.json
+++ b/package.json
@@ -10,8 +10,10 @@
 		"email": "sindresorhus@gmail.com",
 		"url": "https://sindresorhus.com"
 	},
+	"type": "module",
+	"exports": "./index.js",
 	"engines": {
-		"node": ">=10"
+		"node": ">=12"
 	},
 	"scripts": {
 		"test": "xo && ava && tsd"
@@ -35,10 +37,10 @@
 		"timeout"
 	],
 	"devDependencies": {
-		"ava": "^2.4.0",
-		"in-range": "^2.0.0",
-		"time-span": "^4.0.0",
-		"tsd": "^0.13.1",
-		"xo": "^0.33.0"
+		"ava": "^3.15.0",
+		"in-range": "^3.0.0",
+		"time-span": "^5.0.0",
+		"tsd": "^0.14.0",
+		"xo": "^0.38.2"
 	}
 }
diff --git a/readme.md b/readme.md
index cdf05f0..95e9599 100644
--- a/readme.md
+++ b/readme.md
@@ -17,7 +17,7 @@ $ npm install sleep-synchronously
 ## Usage
 
 ```js
-const sleepSynchronously = require('sleep-synchronously');
+import sleepSynchronously from 'sleep-synchronously';
 
 console.log(new Date());
 //=> Sun Aug 16 2020 14:28:54 GMT+0200 (Central European Summer Time)
diff --git a/test.js b/test.js
index d2d17e9..92c31b1 100644
--- a/test.js
+++ b/test.js
@@ -1,7 +1,7 @@
-import {serial as test} from 'ava';
+import test from 'ava';
 import timeSpan from 'time-span';
 import inRange from 'in-range';
-import sleepSynchronously from '.';
+import sleepSynchronously from './index.js';
 
 test('main', t => {
 	const end = timeSpan();