diff --git a/clang-tools-extra/docs/ReleaseNotes.rst b/clang-tools-extra/docs/ReleaseNotes.rst
--- a/clang-tools-extra/docs/ReleaseNotes.rst
+++ b/clang-tools-extra/docs/ReleaseNotes.rst
@@ -261,6 +261,11 @@
   <clang-tidy/checks/readability/identifier-naming>` which failed to indicate
   the number of asterisks.
 
+- Improved readability for hungarian notation in
+  :doc:`readability-identifier-naming
+  <clang-tidy/checks/readability/identifier-naming>` by changing the prefix
+  from `cust` to `my` in regression test.
+
 - Fixed a false positive in :doc:`readability-implicit-bool-conversion
   <clang-tidy/checks/readability/implicit-bool-conversion>` check warning would
   be unnecessarily emitted for explicit cast using direct list initialization.