diff --git a/README.md b/README.md
index a881f5eff..287ae53ea 100644
--- a/README.md
+++ b/README.md
@@ -23,9 +23,8 @@ Feel free to stop by our [Matrix room](https://chat.mozilla.org/#/room/#pdfjs:mo
 
 ### Online demo
 
-Please note that the "Modern browsers" version assumes native support for
-features such as optional chaining, nullish coalescing,
-and private `class` fields/methods; please also see [this wiki page](https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support).
+Please note that the "Modern browsers" version assumes native support for the
+latest JavaScript features; please also see [this wiki page](https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support).
 
 + Modern browsers: https://mozilla.github.io/pdf.js/web/viewer.html
 
diff --git a/external/dist/README.md b/external/dist/README.md
index 144be52bf..70b6b3c95 100644
--- a/external/dist/README.md
+++ b/external/dist/README.md
@@ -7,8 +7,8 @@ parsing and rendering PDFs.
 This is a pre-built version of the PDF.js source code. It is automatically
 generated by the build scripts.
 
-For usage with older browsers or environments, without support for modern
-features such as optional chaining, nullish coalescing,
-and private `class` fields/methods; please see the `legacy/` folder.
+For usage with older browsers/environments, without native support for the
+latest JavaScript features, please see the `legacy/` folder.
+Please see [this wiki page](https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support) for information about supported browsers/environments.
 
 See https://github.com/mozilla/pdf.js for learning and contributing.