diff --git a/copyright.txt b/copyright.txt
index fa384d69a..402252293 100644
--- a/copyright.txt
+++ b/copyright.txt
@@ -16,6 +16,7 @@ Mustafa Caylak
 Oliver Ehrenmüller
 Paul Strugnell
 Pavel Makhov
+Peter Larson
 Remko Plantenga
 Samuel Wright
 Sebastian Hasait