diff --git a/package.json b/package.json
index 947aa214..7c77959c 100644
--- a/package.json
+++ b/package.json
@@ -55,6 +55,7 @@
     "pegjs": "^0.10.0",
     "prop-types": "^15.7.2",
     "seedrandom": "^3.0.5",
+    "whatwg-url": "^7.1.0",
     "yoga-layout-prebuilt": "^1.9.5"
   },
   "peerDependencies": {
@@ -84,13 +85,14 @@
     "@skpm/test-runner": "^0.4.1",
     "@types/airbnb-prop-types": "^2.13.1",
     "@types/invariant": "^2.2.31",
-    "@types/node-fetch": "^2.5.4",
     "@types/jest": "^25.2.1",
     "@types/node": "^13.13.2",
+    "@types/node-fetch": "^2.5.4",
     "@types/pegjs": "^0.10.1",
     "@types/react": "^16.9.34",
     "@types/react-test-renderer": "^16.9.2",
     "@types/seedrandom": "^2.4.28",
+    "@types/whatwg-url": "^8.2.0",
     "gitbook-cli": "^2.3.0",
     "gitbook-plugin-anchorjs": "^2.1.0",
     "gitbook-plugin-codeblock-disable-glossary": "0.0.1",
diff --git a/src/platformBridges/macos.ts b/src/platformBridges/macos.ts
index 68b5cd44..5904e329 100644
--- a/src/platformBridges/macos.ts
+++ b/src/platformBridges/macos.ts
@@ -8,6 +8,7 @@ import { readFile as nodeReadFile } from 'fs';
 const NodeMacOSBridge: PlatformBridge = {
   createStringMeasurer,
   findFontName,
+  URL,
   fetch: fetch as any, // call signatures are not perfectly identical, but we'll make do
   async readFile(path: string): Promise<Buffer> {
     return new Promise((resolve, reject) => {
diff --git a/src/platformBridges/sketch/index.ts b/src/platformBridges/sketch/index.ts
index 4824b2e3..e50e6c02 100644
--- a/src/platformBridges/sketch/index.ts
+++ b/src/platformBridges/sketch/index.ts
@@ -1,9 +1,13 @@
+import { URL } from 'whatwg-url';
+
 import { PlatformBridge } from '../../types';
 import { createStringMeasurer } from './createStringMeasurer';
 import { findFontName } from './findFontName';
 import readFile from './readFile';
 
 const SketchBridge: PlatformBridge = {
+  // @ts-ignore – @types/whatwg-url doesn't match Node.js global.URL
+  URL,
   createStringMeasurer,
   findFontName,
   fetch,
diff --git a/src/types/index.ts b/src/types/index.ts
index 97ad6d6f..373a49f7 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -123,6 +123,7 @@ export type ResizeConstraints = {
 
 export type PlatformBridge = {
   createStringMeasurer(textNodes: TextNode[], maxWidth: number): Size;
+  URL: typeof URL;
   findFontName(style: TextStyle): string;
   fetch(input: RequestInfo, init?: RequestInit): Promise<Response>;
   readFile(path: string): Promise<Buffer>;
diff --git a/src/utils/getImageDataFromURL.ts b/src/utils/getImageDataFromURL.ts
index 6554c361..7f715baf 100644
--- a/src/utils/getImageDataFromURL.ts
+++ b/src/utils/getImageDataFromURL.ts
@@ -40,7 +40,7 @@ export const getImageDataFromURL = (bridge: PlatformBridge) => async (
   }
 
   try {
-    const parsedUrl = new URL(url);
+    const parsedUrl = new bridge.URL(url);
 
     const buffer = await (parsedUrl.protocol === 'file:'
       ? bridge.readFile(parsedUrl.pathname)
diff --git a/tsconfig.module.json b/tsconfig.module.json
index 6159976f..795ba395 100644
--- a/tsconfig.module.json
+++ b/tsconfig.module.json
@@ -1,7 +1,7 @@
 {
   "extends": "./tsconfig",
   "compilerOptions": {
-    "target": "es5",
+    "target": "es2017",
     "outDir": "lib/module",
     "module": "esnext"
   },