diff --git a/docs/schema/theme.json b/docs/schema/theme.json
index 3dec91cb5..d25bf3616 100644
--- a/docs/schema/theme.json
+++ b/docs/schema/theme.json
@@ -268,6 +268,12 @@
             "pt"
           ]
         },
+        {
+          "title": "Site language: Portuguese (Brasilian)",
+          "enum": [
+            "pt-BR"
+          ]
+        },
         {
           "title": "Site language: Romanian",
           "enum": [