diff --git a/preface.asciidoc b/preface.asciidoc
index 49e2ac0..faef108 100644
--- a/preface.asciidoc
+++ b/preface.asciidoc
@@ -175,6 +175,7 @@ Many contributors offered comments, corrections, and additions to the book as it
 Following is an alphabetically sorted list of all the GitHub contributors, including their GitHub IDs in parentheses:
 
 * 8go (@8go)
+* Aaqil Aziz (@batmanscode)
 * Alexander Gnip (@quantumcthulhu)
 * Alpha Q. Smith (@alpha_github_id)
 * Brian L. McMichael (@brianmcmichael)