diff --git a/js/common.js b/js/common.js
index d39e0b7b..6c44a32f 100644
--- a/js/common.js
+++ b/js/common.js
@@ -7,7 +7,7 @@ global.jsdom = require('jsdom-global');
 global.cleanup = global.jsdom();
 global.URL = require('jsdom-url').URL;
 global.fs = require('fs');
-global.WebCrypto = require('node-webcrypto-ossl');
+global.WebCrypto = require('@peculiar/webcrypto').Crypto;
 
 // application libraries to test
 global.$ = global.jQuery = require('./jquery-3.4.1');
diff --git a/js/package.json b/js/package.json
index 516eb6fc..489cc677 100644
--- a/js/package.json
+++ b/js/package.json
@@ -12,7 +12,7 @@
     "jsdom-global": "^2.1.1",
     "jsdom-url": "^2.2.1",
     "jsverify": "^0.8.3",
-    "node-webcrypto-ossl": "^1.0.37"
+    "@peculiar/webcrypto": "^1.1.1"
   },
   "scripts": {
     "test": "mocha"
diff --git a/tst/README.md b/tst/README.md
index 340f61f2..c8bb7519 100644
--- a/tst/README.md
+++ b/tst/README.md
@@ -104,7 +104,8 @@ $ cd PrivateBin/js
 $ npm install
 ```
 
-To run the tests, just change into the `js` directory and run istanbul:
+To run the tests, just change into the `js` directory and run nyc (will produce
+coverage report) or just mocha:
 
 ```console
 $ cd PrivateBin/js