diff --git a/package-lock.json b/package-lock.json
index 1490caf37b13..c40786d649ae 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1121,6 +1121,10 @@
       "integrity": "sha512-sL/cEvJWAnClXw0wHk85/2L0G6Sj8UB0Ctc1TEMbKSsmpRosqhwj9gWgFRZSrBr2f9tiXISwNhCPmlfqUqyb9Q==",
       "dev": true
     },
+    "@webref/idl": {
+      "version": "file:packages/idl",
+      "dev": true
+    },
     "@zkochan/cmd-shim": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/@zkochan/cmd-shim/-/cmd-shim-3.1.0.tgz",
diff --git a/package.json b/package.json
index 8110ee06c148..00f20ddbfbb9 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
   },
   "devDependencies": {
     "@octokit/rest": "16.28.7",
+    "@webref/idl": "file:packages/idl",
     "flags": "0.1.3",
     "lerna": "3.22.1",
     "mocha": "8.2.0",
diff --git a/test/idl/all.js b/test/idl/all.js
index ce2a79510998..f993c31d3104 100644
--- a/test/idl/all.js
+++ b/test/idl/all.js
@@ -1,6 +1,6 @@
 const assert = require('assert');
 
-const idl = require('../../packages/idl');
+const idl = require('@webref/idl');
 
 describe('@webidl/idl module', () => {
   it('listAll', async () => {
diff --git a/test/idl/validate.js b/test/idl/validate.js
index f51284daa759..52f10c13fbe9 100644
--- a/test/idl/validate.js
+++ b/test/idl/validate.js
@@ -1,7 +1,7 @@
 const assert = require('assert');
 const WebIDL2 = require('webidl2');
 
-const idl = require('../../packages/idl');
+const idl = require('@webref/idl');
 
 idl.parseAll().then((all) => {
   describe('WebIDL2.validate', () => {