diff --git a/site/plugins/admin/lang/cs_CZ.yaml b/site/plugins/admin/lang/cs_CZ.yaml
index d5562ad7..3be9db1e 100644
--- a/site/plugins/admin/lang/cs_CZ.yaml
+++ b/site/plugins/admin/lang/cs_CZ.yaml
@@ -234,6 +234,7 @@ admin_active_theme: "Active Theme"
 admin_get_more_themes: "Get More Themes"
 admin_images: "Images"
 admin_data: "Data"
+admin_slim: "Slim"
 admin_slugify: "Slug"
 admin_entries_limit: "Entries limit"
 admin_slug: "Slug"