diff --git a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2017-12-01-preview/postgresql.json b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2017-12-01-preview/postgresql.json
index e2ad21c703f3..55c8667ce500 100644
--- a/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2017-12-01-preview/postgresql.json
+++ b/specification/postgresql/resource-manager/Microsoft.DBforPostgreSQL/preview/2017-12-01-preview/postgresql.json
@@ -1128,7 +1128,8 @@
           "description": "The tier of the particular SKU, e.g. Basic.",
           "enum": [
             "Basic",
-            "Standard"
+            "GeneralPurpose",
+            "MemoryOptimized"
           ],
           "x-ms-enum": {
             "name": "SkuTier",