diff --git a/package-lock.json b/package-lock.json
index e949fea8c38b..92dd19fcf1e1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20,7 +20,7 @@
         "css-tree": "2.3.1",
         "flags": "0.1.3",
         "mocha": "10.7.0",
-        "reffy": "16.1.2",
+        "reffy": "17.0.1",
         "rimraf": "5.0.7",
         "strudy": "^2.2.0",
         "webidl2": "24.4.1"
@@ -2474,10 +2474,11 @@
       }
     },
     "node_modules/reffy": {
-      "version": "16.1.2",
-      "resolved": "https://registry.npmjs.org/reffy/-/reffy-16.1.2.tgz",
-      "integrity": "sha512-yiLpfuI8Ft6TZoL5dXAgWk2qdSc1SyKXyod1+C7zd50EvQgALRp0y539mL++fH2RrfiyRkvjKHAwCfxuMKsp3A==",
+      "version": "17.0.1",
+      "resolved": "https://registry.npmjs.org/reffy/-/reffy-17.0.1.tgz",
+      "integrity": "sha512-rhmfe4WKBM3wklMp3vGMKdYtfJfK7edjzJ+WevNGFapxxhj0STWL2PX+jO3gJmY9G63bPqidb+wPsHI8OXKTRw==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
         "ajv": "8.17.1",
         "ajv-formats": "3.0.1",
@@ -5426,9 +5427,9 @@
       }
     },
     "reffy": {
-      "version": "16.1.2",
-      "resolved": "https://registry.npmjs.org/reffy/-/reffy-16.1.2.tgz",
-      "integrity": "sha512-yiLpfuI8Ft6TZoL5dXAgWk2qdSc1SyKXyod1+C7zd50EvQgALRp0y539mL++fH2RrfiyRkvjKHAwCfxuMKsp3A==",
+      "version": "17.0.1",
+      "resolved": "https://registry.npmjs.org/reffy/-/reffy-17.0.1.tgz",
+      "integrity": "sha512-rhmfe4WKBM3wklMp3vGMKdYtfJfK7edjzJ+WevNGFapxxhj0STWL2PX+jO3gJmY9G63bPqidb+wPsHI8OXKTRw==",
       "dev": true,
       "requires": {
         "ajv": "8.17.1",
diff --git a/package.json b/package.json
index 583b88a6b200..5b1831e45373 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "css-tree": "2.3.1",
     "flags": "0.1.3",
     "mocha": "10.7.0",
-    "reffy": "16.1.2",
+    "reffy": "17.0.1",
     "rimraf": "5.0.7",
     "strudy": "^2.2.0",
     "webidl2": "24.4.1"
diff --git a/test/events/all.js b/test/events/all.js
index 5f97b914334b..436143ba059d 100644
--- a/test/events/all.js
+++ b/test/events/all.js
@@ -12,8 +12,7 @@ import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 import events from '@webref/events';
 import idl from '@webref/idl';
-import reffy from 'reffy';
-const getInterfaceTreeInfo = reffy.getInterfaceTreeInfo;
+import { getInterfaceTreeInfo } from 'reffy';
 
 const scriptPath = path.dirname(fileURLToPath(import.meta.url));
 const curatedFolder = path.join(scriptPath, '..', '..', 'curated');
diff --git a/test/schemas.js b/test/schemas.js
index f5d6ef4006c8..8b018fb3164d 100644
--- a/test/schemas.js
+++ b/test/schemas.js
@@ -8,14 +8,14 @@ import { strict as assert } from 'node:assert';
 import fs from 'node:fs';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
-import reffy from 'reffy';
+import { getSchemaValidationFunction } from 'reffy';
 import { loadJSON } from '../tools/utils.js';
 
 const scriptPath = path.dirname(fileURLToPath(import.meta.url));
 const curatedFolder = path.join(scriptPath, '..', 'curated');
 const files = fs.readdirSync(curatedFolder);
 for (const file of files) {
-  const validate = reffy.getSchemaValidationFunction(file);
+  const validate = await getSchemaValidationFunction(file);
   if (file.endsWith('.json')) {
     describe(`The ${file} file`, function () {
       it('contains valid data', async function () {
diff --git a/tools/amend-event-data.js b/tools/amend-event-data.js
index 9dee18d71c9c..eae41d4751bf 100644
--- a/tools/amend-event-data.js
+++ b/tools/amend-event-data.js
@@ -14,8 +14,7 @@ import fs from 'node:fs/promises';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { loadJSON } from './utils.js';
-import reffy from 'reffy';
-const expandCrawlResult = reffy.expandCrawlResult;
+import { expandCrawlResult } from 'reffy';
 
 const patches = {
   'IndexedDB-3': [
diff --git a/tools/drop-css-property-duplicates.js b/tools/drop-css-property-duplicates.js
index 1548f0318c70..5aa9e277c7f0 100644
--- a/tools/drop-css-property-duplicates.js
+++ b/tools/drop-css-property-duplicates.js
@@ -16,8 +16,7 @@ import util from 'node:util';
 import { fileURLToPath } from 'node:url';
 import { execFile as execFileCb } from 'node:child_process';
 import { loadJSON } from './utils.js';
-import reffy from 'reffy';
-const expandCrawlResult = reffy.expandCrawlResult;
+import { expandCrawlResult } from 'reffy';
 const execFile = util.promisify(execFileCb);
 
 
diff --git a/tools/prepare-curated.js b/tools/prepare-curated.js
index cc14398e263a..d2cb00bdb77b 100644
--- a/tools/prepare-curated.js
+++ b/tools/prepare-curated.js
@@ -27,8 +27,7 @@ import {
 import { applyPatches } from './apply-patches.js';
 import { dropCSSPropertyDuplicates } from './drop-css-property-duplicates.js';
 import { curateEvents } from './amend-event-data.js';
-import reffy from 'reffy';
-const crawlSpecs = reffy.crawlSpecs;
+import { crawlSpecs } from 'reffy';
 
 
 /**