diff --git a/src/pages/preface/contributors.md b/src/pages/preface/contributors.md
index e1e9723b..bed46736 100644
--- a/src/pages/preface/contributors.md
+++ b/src/pages/preface/contributors.md
@@ -29,6 +29,7 @@ Gregor Ihmor,
 Henk-Jan Meijer,
 HigherKindedType,
 Janne Pelkonen,
+Joao Azevedo,
 Jason Scott,
 Javier Arrieta,
 Jenny Clements,