diff --git a/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/preview/2022-10-01-preview/machineLearningServices.json b/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/preview/2022-10-01-preview/machineLearningServices.json
index c8b8156e476b..733bff52b38f 100644
--- a/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/preview/2022-10-01-preview/machineLearningServices.json
+++ b/specification/machinelearningservices/resource-manager/Microsoft.MachineLearningServices/preview/2022-10-01-preview/machineLearningServices.json
@@ -5838,7 +5838,9 @@
         "ManagedIdentity",
         "UsernamePassword",
         "None",
-        "SAS"
+        "SAS",
+        "ServicePrincipal",
+        "AccessKey"
       ],
       "type": "string",
       "description": "Authentication type of the connection target",
@@ -5848,17 +5850,8 @@
       }
     },
     "ConnectionCategory": {
-      "enum": [
-        "PythonFeed",
-        "ContainerRegistry",
-        "Git"
-      ],
       "type": "string",
-      "description": "Category of the connection",
-      "x-ms-enum": {
-        "name": "ConnectionCategory",
-        "modelAsString": true
-      }
+      "description": "Category of the connection"
     },
     "WorkspaceConnectionUsernamePassword": {
       "type": "object",
@@ -5935,6 +5928,65 @@
       "additionalProperties": false,
       "x-ms-discriminator-value": "UsernamePassword"
     },
+    "WorkspaceConnectionAccessKey": {
+      "type": "object",
+      "properties": {
+        "accessKeyId": {
+          "type": "string"
+        },
+        "secretAccessKey": {
+          "type": "string",
+          "x-ms-secret": true
+        }
+      },
+      "additionalProperties": false
+    },
+    "AccessKeyAuthTypeWorkspaceConnectionProperties": {
+      "type": "object",
+      "allOf": [
+        {
+          "$ref": "#/definitions/WorkspaceConnectionPropertiesV2"
+        }
+      ],
+      "properties": {
+        "credentials": {
+          "$ref": "#/definitions/WorkspaceConnectionAccessKey"
+        }
+      },
+      "additionalProperties": false,
+      "x-ms-discriminator-value": "AccessKey"
+    },
+    "WorkspaceConnectionServicePrincipal": {
+      "type": "object",
+      "properties": {
+        "clientId": {
+          "type": "string"
+        },
+        "clientSecret": {
+          "type": "string",
+          "x-ms-secret": true
+        },
+        "tenantId": {
+          "type": "string"
+        }
+      },
+      "additionalProperties": false
+    },
+    "ServicePrincipalAuthTypeWorkspaceConnectionProperties": {
+      "type": "object",
+      "allOf": [
+        {
+          "$ref": "#/definitions/WorkspaceConnectionPropertiesV2"
+        }
+      ],
+      "properties": {
+        "credentials": {
+          "$ref": "#/definitions/WorkspaceConnectionServicePrincipal"
+        }
+      },
+      "additionalProperties": false,
+      "x-ms-discriminator-value": "ServicePrincipal"
+    },
     "WorkspaceConnectionPropertiesV2": {
       "required": [
         "authType"