diff --git a/public/base-locales/en.json b/public/base-locales/en.json
index 80ffee9ea..5a44a2b10 100644
--- a/public/base-locales/en.json
+++ b/public/base-locales/en.json
@@ -164,6 +164,7 @@
   "event": "Event",
   "legendary": "Legendary",
   "mythical": "Mythical",
+  "ultra_beast": "Ultra Beast",
   "alt_forms": "Alt Forms",
   "alola": "Alola",
   "galarian": "Galarian",
diff --git a/server/scripts/generateMasterfile.js b/server/scripts/generateMasterfile.js
index ea0f102a3..a251531b9 100644
--- a/server/scripts/generateMasterfile.js
+++ b/server/scripts/generateMasterfile.js
@@ -19,6 +19,7 @@ const getRarityLevel = (id, pkmn) => {
   }
   if (pkmn.legendary) pkmnRarity = 'legendary'
   if (pkmn.mythical) pkmnRarity = 'mythical'
+  if (pkmn.ultraBeast) pkmnRarity = 'ultraBeast'
   return pkmnRarity
 }