diff --git a/client/dictionaries/t55xx_default_pwds.dic b/client/dictionaries/t55xx_default_pwds.dic
index 6e7a69583..afc00bddf 100644
--- a/client/dictionaries/t55xx_default_pwds.dic
+++ b/client/dictionaries/t55xx_default_pwds.dic
@@ -20,6 +20,11 @@ A5B4C3D2
 00434343
 44B44CAE
 88661858
+#
+# ZX-copy3  T55xx / EM4305
+# ref. http://www.proxmark.org/forum/viewtopic.php?pid=40662#p40662
+19920427
+84AC15E2
 # paxton bullit?
 575F4F4B
 #