diff --git a/CHANGES b/CHANGES
index 009b96d6d..e9e44be24 100644
--- a/CHANGES
+++ b/CHANGES
@@ -179,6 +179,7 @@ Features added
 * #2820: autoclass directive supports nested class
 * Add ``app.add_html_math_renderer()`` to register a math renderer for HTML
 * Apply :confval:`trim_doctest_flags` to all builders (cf. text, manpages)
+* #5140: linkcheck: Add better Accept header to HTTP client
 
 Bugs fixed
 ----------