diff --git a/service/market.py b/service/market.py
index 3e128cbbc..745909e23 100644
--- a/service/market.py
+++ b/service/market.py
@@ -210,8 +210,10 @@ class Market(object):
             "Fiend"                       : self.les_grp,  # AT13 prize
             "Caedes"                      : self.les_grp,  # AT14 prize
             "Rabisu"                      : self.les_grp,  # AT14 prize
-            "Victor"                      : self.les_grp,  # AT prize
-            "Virtuoso"                    : self.les_grp,  # AT prize
+            "Victor"                      : self.les_grp,  # AT15 prize
+            "Virtuoso"                    : self.les_grp,  # AT15 prize
+            "Hydra"                       : self.les_grp,  # AT16 prize
+            "Tiamat"                      : self.les_grp,  # AT16 prize
         }
 
         self.ITEMS_FORCEGROUP_R = self.__makeRevDict(self.ITEMS_FORCEGROUP)