diff --git a/docs/WHATSNEW b/docs/WHATSNEW
index dd9ba66f..c0ad84eb 100644
--- a/docs/WHATSNEW
+++ b/docs/WHATSNEW
@@ -1,5 +1,24 @@
 CHANGES TO REMIND
 
+* VERSION 5.3 Patch 3 - 2025-03-03
+
+- NEW FEATURE: remind: If a command spans more than one line (because of
+  backslash line continuation) output both the starting and ending line
+  number in error messages.
+
+- NEW FEATURE: remind: In the JSON -pp and -ppp output, include a new key
+  lineno_start to specify the starting line of a multi-line reminder.
+  The existing lineno key specifies the ending line; this is maintained
+  for backward-compatibility.
+
+- MINOR IMPROVEMENT: include/holidays/misc.rem: Add a few new holidays and
+  URL INFO strings.
+
+- CHANGE: remind: Issue a warning if a time-related subsitution sequence
+  is used with a non-timed REM command.
+
+- BUG FIX: remind: Fix a memory leak.
+
 * VERSION 5.3 Patch 2 - 2025-02-09
 
 - CHANGE: remind: Revert a change to the way "-y" tags are generated that