diff --git a/package.json b/package.json
index 10324f98d671..1b0571565e06 100644
--- a/package.json
+++ b/package.json
@@ -1,13 +1,13 @@
 {
   "name": "azure-rest-api-specs",
   "devDependencies": {
-    "@azure-tools/typespec-autorest": "0.34.0-dev.6",
+    "@azure-tools/typespec-autorest": "next",
     "@azure-tools/typespec-azure-core": "next",
     "@azure-tools/typespec-azure-resource-manager": "next",
     "@azure-tools/typespec-client-generator-core": "next",
     "@azure-tools/typespec-providerhub": "next",
     "@typespec/compiler": "next",
-    "@typespec/http": "0.48.0-dev.0",
+    "@typespec/http": "next",
     "@typespec/lint": "next",
     "@typespec/openapi": "next",
     "@typespec/rest": "next",
diff --git a/specification/cognitiveservices/data-plane/ContentSafety/preview/2023-04-30-preview/contentsafety.json b/specification/cognitiveservices/data-plane/ContentSafety/preview/2023-04-30-preview/contentsafety.json
index 5b577a65534f..7f2606fa5167 100644
--- a/specification/cognitiveservices/data-plane/ContentSafety/preview/2023-04-30-preview/contentsafety.json
+++ b/specification/cognitiveservices/data-plane/ContentSafety/preview/2023-04-30-preview/contentsafety.json
@@ -203,7 +203,7 @@
             "description": "The resource instance.",
             "required": true,
             "schema": {
-              "$ref": "#/definitions/TextBlocklistUpdate"
+              "$ref": "#/definitions/TextBlocklistCreateOrUpdate"
             }
           }
         ],
@@ -942,6 +942,27 @@
         "blocklistName"
       ]
     },
+    "TextBlocklistCreateOrUpdate": {
+      "type": "object",
+      "description": "Text Blocklist.",
+      "properties": {
+        "blocklistName": {
+          "type": "string",
+          "description": "Text blocklist name.",
+          "maxLength": 64,
+          "pattern": "^[0-9A-Za-z._~-]+$",
+          "x-ms-mutability": [
+            "read",
+            "create"
+          ]
+        },
+        "description": {
+          "type": "string",
+          "description": "Text blocklist description.",
+          "maxLength": 1024
+        }
+      }
+    },
     "TextBlocklistMatchResult": {
       "type": "object",
       "description": "The result of blocklist match.",
@@ -980,17 +1001,6 @@
         "length"
       ]
     },
-    "TextBlocklistUpdate": {
-      "type": "object",
-      "description": "Text Blocklist.",
-      "properties": {
-        "description": {
-          "type": "string",
-          "description": "Text blocklist description.",
-          "maxLength": 1024
-        }
-      }
-    },
     "TextCategory": {
       "type": "string",
       "description": "Text analyze category",
diff --git a/specification/contosowidgetmanager/data-plane/Azure.Contoso.WidgetManager/preview/2022-11-01-preview/widgets.json b/specification/contosowidgetmanager/data-plane/Azure.Contoso.WidgetManager/preview/2022-11-01-preview/widgets.json
index 157d3fc87d7a..65d37b6ed740 100644
--- a/specification/contosowidgetmanager/data-plane/Azure.Contoso.WidgetManager/preview/2022-11-01-preview/widgets.json
+++ b/specification/contosowidgetmanager/data-plane/Azure.Contoso.WidgetManager/preview/2022-11-01-preview/widgets.json
@@ -143,7 +143,7 @@
             "description": "The resource instance.",
             "required": true,
             "schema": {
-              "$ref": "#/definitions/WidgetSuiteUpdate"
+              "$ref": "#/definitions/WidgetSuiteCreateOrUpdate"
             }
           }
         ],
@@ -454,7 +454,7 @@
         "createdAt"
       ]
     },
-    "FakedSharedModelUpdate": {
+    "FakedSharedModelCreateOrUpdate": {
       "type": "object",
       "description": "Faked shared model",
       "properties": {
@@ -532,7 +532,7 @@
         "manufacturerId"
       ]
     },
-    "WidgetSuiteUpdate": {
+    "WidgetSuiteCreateOrUpdate": {
       "type": "object",
       "description": "A widget.",
       "properties": {
@@ -541,7 +541,7 @@
           "description": "The ID of the widget's manufacturer."
         },
         "sharedModel": {
-          "$ref": "#/definitions/FakedSharedModelUpdate",
+          "$ref": "#/definitions/FakedSharedModelCreateOrUpdate",
           "description": "The faked shared model."
         }
       }