diff --git a/preface.asciidoc b/preface.asciidoc
index 9007f5de..38caa4d6 100644
--- a/preface.asciidoc
+++ b/preface.asciidoc
@@ -159,6 +159,7 @@ Many contributors offered comments, corrections, and additions to the early-rele
 * drstrangeM
 * Ed Eykholt (edeykholt)
 * Ed Leafe (EdLeafe)
+* Eric Voskuil (evoskuil)
 * Eric Winchell (winchell)
 * Erik Wahlström (erikwam)
 * effectsToCause (vericoin)