diff --git a/AUTHORS b/AUTHORS
index 3fa559d..b0275b1 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -6,6 +6,7 @@ Brendan Zabarauskas
 With help and contributions from:
 
 Brian Heylin
+Colin Sherratt
 Dzmitry Malyshau
 Erick Tryzelaar
 Luqman Aden