diff --git a/frontend/locales/en.json b/frontend/locales/en.json
index 4ad71cb9..b1d1d3b2 100644
--- a/frontend/locales/en.json
+++ b/frontend/locales/en.json
@@ -252,6 +252,7 @@
         "zh-MO": "Chinese (Macau)",
         "zh-TW": "Chinese (Traditional)"
     },
+    "languages.cs-CZ": "Czech",
     "languages.da-DK": "Danish",
     "languages.fi.FI": "Finnish",
     "languages.ro-RO": "Romanian",