diff --git a/specification/storage/data-plane/Microsoft.FileStorage/stable/2025-01-05/file.json b/specification/storage/data-plane/Microsoft.FileStorage/stable/2025-01-05/file.json
index 2cf5fadf788e..bba433008f77 100644
--- a/specification/storage/data-plane/Microsoft.FileStorage/stable/2025-01-05/file.json
+++ b/specification/storage/data-plane/Microsoft.FileStorage/stable/2025-01-05/file.json
@@ -6706,7 +6706,8 @@
       "enum": [
         "TransactionOptimized",
         "Hot",
-        "Cool"
+        "Cool",
+        "Premium"
       ],
       "x-ms-enum": {
         "name": "ShareAccessTier",