diff --git a/UPGRADING b/UPGRADING
index d92e0573bce5..9c822b4d5cd1 100755
--- a/UPGRADING
+++ b/UPGRADING
@@ -783,3 +783,12 @@ g. New Hash algorithms
   - fnv132
   - fnv164
   - joaat
+
+=====================
+12.1 New in PHP 5.4.2
+=====================
+
+  New functions
+  - pgsql
+    - pg_escape_identifier()
+    - pg_escape_literal()