diff --git a/translations/cs.json b/translations/cs.json
index f59da1c..d62d604 100644
--- a/translations/cs.json
+++ b/translations/cs.json
@@ -360,5 +360,7 @@
     "joined": "Připojen/a",
     "cake_day_title": "Cake day:",
     "emoji_picker": "Vybrat Emoji",
-    "unresolved_by": "Odmítl/a <1></1>"
+    "unresolved_by": "Odmítl/a <1></1>",
+    "by": "od",
+    "very_weak": "Velmi slabé"
 }