diff --git a/src/locales/ja/challenges.json b/src/locales/ja/challenges.json
index d137df14086..326906cb325 100644
--- a/src/locales/ja/challenges.json
+++ b/src/locales/ja/challenges.json
@@ -32,5 +32,12 @@
     "desc": "タイプ相性が 反転で、なんの タイプも 「効果はなし」が ありません\n他の チャレンジの 実績が 無効に されます",
     "value.0": "オフ",
     "value.1": "オン"
+  },
+  "trickRoom": {
+    "name": "Trick Room",
+    "shortName": "Trick Room",
+    "desc": "All battles are under the effect of Trick Room, where slower Pokémon move sooner and faster Pokémon move later.\nDisables other challenges' achievements.",
+    "value.0": "Off",
+    "value.1": "On"
   }
 }