diff --git a/Misc/ACKS b/Misc/ACKS
index 948e542..435cd12 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1097,6 +1097,7 @@
 Iustin Pop
 Claudiu Popa
 John Popplewell
+Matheus Vieira Portela
 Davin Potts
 Guillaume Pratte
 Florian Preinstorfer