diff --git a/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/AppServicePlans.json b/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/AppServicePlans.json
index 79412182b661..d26732e4a063 100644
--- a/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/AppServicePlans.json
+++ b/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/AppServicePlans.json
@@ -1556,6 +1556,11 @@
               "default": false,
               "type": "boolean"
             },
+            "maximumElasticWorkerCount": {
+              "format": "int32",
+              "description": "Maximum number of total workers allowed for this ElasticScaleEnabled App Service Plan",
+              "type": "integer"
+            },
             "numberOfSites": {
               "format": "int32",
               "description": "Number of apps assigned to this App Service plan.",
diff --git a/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/CommonDefinitions.json b/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/CommonDefinitions.json
index f7637d3bc98e..1502bbb8f0c9 100644
--- a/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/CommonDefinitions.json
+++ b/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/CommonDefinitions.json
@@ -328,6 +328,11 @@
               "default": false,
               "type": "boolean"
             },
+            "maximumElasticWorkerCount": {
+              "format": "int32",
+              "description": "Maximum number of total workers allowed for this ElasticScaleEnabled App Service Plan",
+              "type": "integer"
+            },
             "numberOfSites": {
               "format": "int32",
               "description": "Number of apps assigned to this App Service plan.",
@@ -3044,4 +3049,4 @@
       ]
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/ResourceProvider.json b/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/ResourceProvider.json
index ab298ee5a2d0..1f16c531f021 100644
--- a/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/ResourceProvider.json
+++ b/specification/web/resource-manager/Microsoft.Web/stable/2018-02-01/ResourceProvider.json
@@ -307,7 +307,9 @@
               "Premium",
               "Dynamic",
               "Isolated",
-              "PremiumV2"
+              "PremiumV2",
+              "ElasticPremium",
+              "ElasticIsolated"
             ],
             "x-ms-enum": {
               "name": "SkuName",