diff --git a/THANKS b/THANKS
index 554c7d405..809e61fa9 100644
--- a/THANKS
+++ b/THANKS
@@ -109,6 +109,7 @@ Dániel Varga                        danielv@axelero.hu
 Danny Levinson                      danny.levinson@overture.com
 Darren Salt                         ds@youmustbejoking.demon.co.uk
 Dave Beckett                        dajobe@dajobe.org
+David Alan Gilbert                  gilbertd@treblig.org
 David Dyck                          dcd@tc.fluke.COM
 David Eisner                        cradle@umd.edu
 David Flynn                         dav@chess.plus.com