diff --git a/README.md b/README.md
index 7985ca692..d27116ece 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ Feel free to skip this section if you are not a contributor.
 
 ```
 npm install --global browserify
-npm install esmify
+npm install esmify --no-save
 ```
 
 ### Building the library
diff --git a/browser-tests/index.html b/browser-tests/index.html
index ceb4801ca..bbe645670 100644
--- a/browser-tests/index.html
+++ b/browser-tests/index.html
@@ -39,7 +39,7 @@
             </div>
         </div>
     </div>
-    <script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
+    <script src="https://code.jquery.com/jquery-3.5.1.min.js" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
     <script src="/node_modules/mocha/mocha.js"></script>
 
     <script>mocha.setup('bdd')</script>