diff --git a/Doc/ACKS b/Doc/ACKS
index 053e503b0e0..ab1e9cb5caa 100644
--- a/Doc/ACKS
+++ b/Doc/ACKS
@@ -18,9 +18,11 @@ In the official sources, this file is encoded in ISO-8859-1 (Latin-1).
 Aahz
 Michael Abbott
 Jim Ahlstrom
+Fred Allen
 A. Amoroso
 Pehr Anderson
 Oliver Andrich
+Jesús Cea Avión
 Daniel Barclay
 Chris Barker
 Don Bashford