From b7d33575fe4294417524833047c27fc1b9af7929 Mon Sep 17 00:00:00 2001
From: Michael Kaply <345868+mkaply@users.noreply.github.com>
Date: Tue, 24 Jun 2025 15:01:31 -0400
Subject: [PATCH] Update docs for DisableBuiltinPDFViewer

---
 docs/index.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/docs/index.md b/docs/index.md
index 669a219..f224345 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -1739,11 +1739,14 @@ Value (string):
 }
 ```
 ### DisableBuiltinPDFViewer
+
 Disable the built in PDF viewer. PDF files are downloaded and sent externally.
 
+Note: As of Firefox 140, this policy no longer completely disables PDF.js; it changes the handler to send PDF files to the operating system. Embedded PDF files are shown in the browser. If you need to completely disable PDF.js, you can use the [`PDFjs`](#pdfjs) policy. 
+
 **Compatibility:** Firefox 60, Firefox ESR 60\
 **CCK2 Equivalent:** `disablePDFjs`\
-**Preferences Affected:** `pdfjs.disabled`
+**Preferences Affected:** N/A
 
 #### Windows (GPO)
 ```
-- 
2.43.0