diff --git a/lib/l10n/intl_cs.arb b/lib/l10n/intl_cs.arb
index f96ac6677..ef5f9be49 100644
--- a/lib/l10n/intl_cs.arb
+++ b/lib/l10n/intl_cs.arb
@@ -2331,5 +2331,15 @@
   "@chats": {
     "type": "text",
     "placeholders": {}
+  },
+  "optionalAddEmail": "(Volitelné) Vaše e-mailová adresa",
+  "@optionalAddEmail": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "invalidEmail": "Neplatný e-mail",
+  "@invalidEmail": {
+    "type": "text",
+    "placeholders": {}
   }
 }