diff --git a/sdk/compute/azure-mgmt-imagebuilder/azure/mgmt/imagebuilder/models/_models.py b/sdk/compute/azure-mgmt-imagebuilder/azure/mgmt/imagebuilder/models/_models.py
index 870168107568..1189e18d5db7 100644
--- a/sdk/compute/azure-mgmt-imagebuilder/azure/mgmt/imagebuilder/models/_models.py
+++ b/sdk/compute/azure-mgmt-imagebuilder/azure/mgmt/imagebuilder/models/_models.py
@@ -351,8 +351,9 @@ def __init__(self, **kwargs):
 class ImageTemplateIdentity(Model):
     """Identity for the image template.
 
-    :param type: The type of identity used for the image template. Possible
-     values include: 'UserAssigned'
+    :param type: The type of identity used for the image template. The type
+     'None' will remove any identities from the image template. Possible values
+     include: 'UserAssigned', 'None'
     :type type: str or ~azure.mgmt.imagebuilder.models.ResourceIdentityType
     :param user_assigned_identities: The list of user identities associated
      with the image template. The user identity dictionary key references will
@@ -608,6 +609,10 @@ class ImageTemplatePowerShellCustomizer(ImageTemplateCustomizer):
     :param run_elevated: If specified, the PowerShell script will be run with
      elevated privileges
     :type run_elevated: bool
+    :param run_as_system: If specified, the PowerShell script will be run with
+     elevated privileges using the Local System user. Can only be true when the
+     runElevated field above is set to true.
+    :type run_as_system: bool
     :param valid_exit_codes: Valid exit codes for the PowerShell script.
      [Default: 0]
     :type valid_exit_codes: list[int]
@@ -624,6 +629,7 @@ class ImageTemplatePowerShellCustomizer(ImageTemplateCustomizer):
         'sha256_checksum': {'key': 'sha256Checksum', 'type': 'str'},
         'inline': {'key': 'inline', 'type': '[str]'},
         'run_elevated': {'key': 'runElevated', 'type': 'bool'},
+        'run_as_system': {'key': 'runAsSystem', 'type': 'bool'},
         'valid_exit_codes': {'key': 'validExitCodes', 'type': '[int]'},
     }
 
@@ -633,6 +639,7 @@ def __init__(self, **kwargs):
         self.sha256_checksum = kwargs.get('sha256_checksum', None)
         self.inline = kwargs.get('inline', None)
         self.run_elevated = kwargs.get('run_elevated', None)
+        self.run_as_system = kwargs.get('run_as_system', None)
         self.valid_exit_codes = kwargs.get('valid_exit_codes', None)
         self.type = 'PowerShell'
 
diff --git a/sdk/compute/azure-mgmt-imagebuilder/azure/mgmt/imagebuilder/models/_models_py3.py b/sdk/compute/azure-mgmt-imagebuilder/azure/mgmt/imagebuilder/models/_models_py3.py
index 5f6aded8d16c..f4a36dd9480b 100644
--- a/sdk/compute/azure-mgmt-imagebuilder/azure/mgmt/imagebuilder/models/_models_py3.py
+++ b/sdk/compute/azure-mgmt-imagebuilder/azure/mgmt/imagebuilder/models/_models_py3.py
@@ -351,8 +351,9 @@ def __init__(self, *, name: str=None, source_uri: str=None, sha256_checksum: str
 class ImageTemplateIdentity(Model):
     """Identity for the image template.
 
-    :param type: The type of identity used for the image template. Possible
-     values include: 'UserAssigned'
+    :param type: The type of identity used for the image template. The type
+     'None' will remove any identities from the image template. Possible values
+     include: 'UserAssigned', 'None'
     :type type: str or ~azure.mgmt.imagebuilder.models.ResourceIdentityType
     :param user_assigned_identities: The list of user identities associated
      with the image template. The user identity dictionary key references will
@@ -608,6 +609,10 @@ class ImageTemplatePowerShellCustomizer(ImageTemplateCustomizer):
     :param run_elevated: If specified, the PowerShell script will be run with
      elevated privileges
     :type run_elevated: bool
+    :param run_as_system: If specified, the PowerShell script will be run with
+     elevated privileges using the Local System user. Can only be true when the
+     runElevated field above is set to true.
+    :type run_as_system: bool
     :param valid_exit_codes: Valid exit codes for the PowerShell script.
      [Default: 0]
     :type valid_exit_codes: list[int]
@@ -624,15 +629,17 @@ class ImageTemplatePowerShellCustomizer(ImageTemplateCustomizer):
         'sha256_checksum': {'key': 'sha256Checksum', 'type': 'str'},
         'inline': {'key': 'inline', 'type': '[str]'},
         'run_elevated': {'key': 'runElevated', 'type': 'bool'},
+        'run_as_system': {'key': 'runAsSystem', 'type': 'bool'},
         'valid_exit_codes': {'key': 'validExitCodes', 'type': '[int]'},
     }
 
-    def __init__(self, *, name: str=None, script_uri: str=None, sha256_checksum: str=None, inline=None, run_elevated: bool=None, valid_exit_codes=None, **kwargs) -> None:
+    def __init__(self, *, name: str=None, script_uri: str=None, sha256_checksum: str=None, inline=None, run_elevated: bool=None, run_as_system: bool=None, valid_exit_codes=None, **kwargs) -> None:
         super(ImageTemplatePowerShellCustomizer, self).__init__(name=name, **kwargs)
         self.script_uri = script_uri
         self.sha256_checksum = sha256_checksum
         self.inline = inline
         self.run_elevated = run_elevated
+        self.run_as_system = run_as_system
         self.valid_exit_codes = valid_exit_codes
         self.type = 'PowerShell'