diff --git a/Misc/ACKS b/Misc/ACKS
index 4e2810300e6b4d..1b54d7ef7f1837 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1509,6 +1509,7 @@ Ng Pheng Siong
 Yann Sionneau
 George Sipe
 J. Sipprell
+Ngalim Siregar
 Kragen Sitaker
 Kaartic Sivaraam
 Ville Skyttä