diff --git a/test/validate/index.js b/test/validate/index.js
index 15d736b8f..613396e4b 100644
--- a/test/validate/index.js
+++ b/test/validate/index.js
@@ -13,11 +13,21 @@ describe('Validate', () => {
     });
   });
 
-  it('vendors', () => {
+  it('vendors', async() => {
+    const { createHash } = require('crypto');
+    const { getVendors } = require('../../scripts/events/lib/utils');
     const vendorsFile = fs.readFileSync(path.join(__dirname, '../../_vendors.yml'));
-    should.not.throw(() => {
-      yaml.load(vendorsFile);
-    });
+    (await Promise.all(Object.entries(yaml.load(vendorsFile)).map(async([key, vendor]) => {
+      vendor.minified = vendor.file || '';
+      const { cdnjs } = getVendors(vendor);
+      // fetch content and check sha256
+      return await fetch(cdnjs)
+        .then(response => response.text())
+        .then(body => {
+          const integrity = Buffer.from(createHash('sha256').update(body, 'utf8').digest()).toString('base64');
+          return !vendor.integrity || 'sha256-' + integrity === vendor.integrity;
+        });
+    })))[0].should.all.equal(true);
   });
 
   it('language', () => {