diff --git a/NEWS b/NEWS
index 5565c601c2c60..140b282c58e33 100644
--- a/NEWS
+++ b/NEWS
@@ -170,6 +170,7 @@ PHP                                                                        NEWS
   . Add support for 4 new rounding modes to the round() function. (Jorg Sowa)
   . debug_zval_dump() now indicates whether an array is packed. (Max Semenik)
   . Fix GH-12143 (Optimize round). (SakiTakamachi)
+  . Changed return type of long2ip to string from string|false. (Jorg Sowa)
 
 - XML:
   . Added XML_OPTION_PARSE_HUGE parser option. (nielsdos)
diff --git a/UPGRADING b/UPGRADING
index 4b2e14fb5ae70..d445d1b1361ff 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -364,6 +364,7 @@ PHP 8.4 UPGRADE NOTES
     decimal number and round it to 0.29. However, "pre-rounding" incorrectly rounds
     certain numbers, so this fix removes "pre-rounding" and changes the way numbers
     are compared, so that the values ​​are correctly rounded as decimal numbers.
+  . long2ip() now returns string instead of string|false.
 
 ========================================
 6. New Functions