diff --git a/book/acknowledgments.md b/book/acknowledgments.md
index 122eb4ca..a10b3173 100644
--- a/book/acknowledgments.md
+++ b/book/acknowledgments.md
@@ -7,6 +7,7 @@
 * Eduardo Romeiro (eromeirosp@outlook.com) - Content & UX.
 * Jorge Ramos (jramos@pobox.com) - Coding, Docs & Architecture
 * PH Nascimento (ph.an@outlook.com) - Product Manager
+* Alan Perdomo (alanperdomo@hotmail.com) - Coding, Docs & Architecture
 
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