diff --git a/AUTHORS b/AUTHORS
index 050eba8..18fae1e 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -12,3 +12,4 @@
 # Please keep the list sorted.
 
 Google Inc.
+Roger Peppe <rogpeppe@gmail.com>
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index e55dfee..9c83ff8 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -28,4 +28,5 @@
 
 Nigel Tao <nigeltao@golang.org>
 Rob Pike <r@golang.org>
+Roger Peppe <rogpeppe@gmail.com>
 Russ Cox <rsc@golang.org>