diff --git a/preface.asciidoc b/preface.asciidoc
index be52d401..bd72d38d 100644
--- a/preface.asciidoc
+++ b/preface.asciidoc
@@ -220,6 +220,7 @@ The following is a list of notable GitHub contributors:
 * Gregory Trubetskoy (grisha)
 * Gus (netpoe)
 * halseth
+* harelw
 * Harry Moreno (morenoh149)
 * Holger Schinzel (schinzelh)
 * Ioannis Cherouvim (cherouvim)