diff --git a/AUTHORS b/AUTHORS
index 29cc62b8f1..778675f7da 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -23,5 +23,6 @@ Kevin Ballard <kevin@sb.org>
 Michael Elkins <michael.elkins@gmail.com>
 Michael Hoisie <hoisie@gmail.com>
 Môshe van der Sterre <moshevds@gmail.com>
+Roger Peppe <rogpeppe@gmail.com>
 Sergio Luis O. B. Correia <sergio@larces.uece.br>
 William Josephson <wjosephson@gmail.com>
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index c9c10502d2..e8e2bae543 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -60,6 +60,7 @@ Peter McKenzie <petermck@google.com>
 Phil Pennock <pdp@golang.org>
 Rob Pike <r@golang.org>
 Robert Griesemer <gri@golang.org>
+Roger Peppe <rogpeppe@gmail.com>
 Russ Cox <rsc@golang.org>
 Scott Schwartz <scotts@golang.org>
 Sergio Luis O. B. Correia <sergio@larces.uece.br>