diff --git a/AUTHORS b/AUTHORS
index e60f3c4bcb..91da17f5c7 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -62,6 +62,7 @@ Clement Skau <clementskau@gmail.com>
 Conrad Meyer <cemeyer@cs.washington.edu>
 Corey Thomasson <cthom.lists@gmail.com>
 Damian Gryski <dgryski@gmail.com>
+Dan Callahan <dan.callahan@gmail.com>
 Dan Sinclair <dan.sinclair@gmail.com>
 Daniel Fleischman <danielfleischman@gmail.com>
 Daniel Krech <eikeon@eikeon.com>
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 946843db92..8b58dc6d88 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -106,6 +106,7 @@ Colby Ranger <cranger@google.com>
 Conrad Meyer <cemeyer@cs.washington.edu>
 Corey Thomasson <cthom.lists@gmail.com>
 Damian Gryski <dgryski@gmail.com>
+Dan Callahan <dan.callahan@gmail.com>
 Dan Sinclair <dan.sinclair@gmail.com>
 Daniel Fleischman <danielfleischman@gmail.com>
 Daniel Krech <eikeon@eikeon.com>