1 files changed, 3 insertions, 0 deletions

diff --git a/UPGRADING b/UPGRADING
index 77fe97257d..8b52be26d7 100755
--- a/UPGRADING
+++ b/UPGRADING
@@ -97,6 +97,9 @@ PHP X.Y UPGRADE NOTES
 - Core:
   - boolval()
 
+- Hash:
+  - hash_pbkdf2()
+
 - Intl:
   - datefmt_get_calendar_object()
   - datefmt_get_timezone()