diff --git a/js/package.json b/js/package.json
index 3854339..dc23852 100644
--- a/js/package.json
+++ b/js/package.json
@@ -12,7 +12,6 @@
     "jsdom-global": "^2.1.1",
     "jsdom-url": "^2.2.1",
     "jsverify": "^0.8.3",
-    "mime-types": "^2.1.20",
     "node-webcrypto-ossl": "^1.0.37"
   },
   "scripts": {
diff --git a/tst/README.md b/tst/README.md
index 10af570..340f61f 100644
--- a/tst/README.md
+++ b/tst/README.md
@@ -89,7 +89,7 @@ and jsdom-global locally:
 ```console
 $ npm install -g mocha nyc
 $ cd PrivateBin/js
-$ npm install jsverify jsdom@9 jsdom-global@2 mime-types node-webcrypto-ossl jsdom-url
+$ npm install
 ```
 
 Example for Debian and Ubuntu, including steps to allow the current user to
@@ -101,7 +101,7 @@ $ sudo chown -R $(whoami) $(npm config get prefix)/{lib/node_modules,bin,share}
 $ ln -s /usr/bin/nodejs /usr/local/bin/node
 $ npm install -g mocha nyc
 $ cd PrivateBin/js
-$ npm install jsverify jsdom@9 jsdom-global@2 mime-types node-webcrypto-ossl
+$ npm install
 ```
 
 To run the tests, just change into the `js` directory and run istanbul: