diff --git a/lib/l10n/intl_zh_Hant.arb b/lib/l10n/intl_zh_Hant.arb
index c08b7f8a..035a9423 100644
--- a/lib/l10n/intl_zh_Hant.arb
+++ b/lib/l10n/intl_zh_Hant.arb
@@ -1811,5 +1811,13 @@
   "@username": {
     "type": "text",
     "placeholders": {}
+  },
+  "userSentUnknownEvent": "{username}發送了一個{type}事件",
+  "@userSentUnknownEvent": {
+    "type": "text",
+    "placeholders": {
+      "username": {},
+      "type": {}
+    }
   }
 }