diff --git a/UPGRADING.md b/UPGRADING.md
index 8a7c9c861f7..6a22f615b35 100644
--- a/UPGRADING.md
+++ b/UPGRADING.md
@@ -6,6 +6,16 @@ More detailed information on key changes can be found in the [Developer update n
 
 The format of this change log follows the advice given at [Keep a CHANGELOG](https://keepachangelog.com).
 
+## 4.5.4+
+
+### core_user
+
+#### Added
+
+- New method `\core_user::get_dummy_fullname(...)` for returning dummy user fullname comprised of configured name fields only
+
+  For more information see [MDL-82132](https://tracker.moodle.org/browse/MDL-82132)
+
 ## 4.5.4
 
 ### core
diff --git a/user/UPGRADING.md b/user/UPGRADING.md
index f0927d77590..ba218e78adc 100644
--- a/user/UPGRADING.md
+++ b/user/UPGRADING.md
@@ -1,5 +1,13 @@
 # core_user (subsystem) Upgrade notes
 
+## 4.5.4+
+
+### Added
+
+- New method `\core_user::get_dummy_fullname(...)` for returning dummy user fullname comprised of configured name fields only
+
+  For more information see [MDL-82132](https://tracker.moodle.org/browse/MDL-82132)
+
 ## 4.5
 
 ### Added