diff --git a/assets/base/i18n/de.json b/assets/base/i18n/de.json
index 12b1b2b99..6e592af52 100644
--- a/assets/base/i18n/de.json
+++ b/assets/base/i18n/de.json
@@ -291,6 +291,7 @@
   "custom_status.suggestions.recent_title": "Zuletzt",
   "custom_status.suggestions.title": "Vorschläge",
   "custom_status.suggestions.working_from_home": "Arbeite von Zuhause",
+  "date.unknown": "Unbekannt",
   "date_separator.today": "Heute",
   "date_separator.yesterday": "Gestern",
   "default_skin_tone": "Standard-Hautton",