diff --git a/include/aeb_fate_opcodes.hrl b/include/aeb_fate_opcodes.hrl
index fbe0b27..56de42c 100644
--- a/include/aeb_fate_opcodes.hrl
+++ b/include/aeb_fate_opcodes.hrl
@@ -112,6 +112,7 @@
 -define('INCA'           , 16#71).
 -define('DECA'           , 16#72).
 -define('POPA'           , 16#73).
+-define('DUPA'           , 16#74).
 
 -define('FUNCTION'       , 16#fe).
 -define('EXTEND'         , 16#ff).