diff --git a/packages/api/src/microsoft/teams/api/models/account.py b/packages/api/src/microsoft/teams/api/models/account.py
index 29f5c9f5..2f3ddf8e 100644
--- a/packages/api/src/microsoft/teams/api/models/account.py
+++ b/packages/api/src/microsoft/teams/api/models/account.py
@@ -3,9 +3,10 @@
 Licensed under the MIT License.
 """
 
-from typing import Any, Dict, Literal, Optional
+from typing import Any, Dict, List, Literal, Optional
 
 from .custom_base_model import CustomBaseModel
+from .membership_source import MembershipSource
 
 AccountRole = Literal["user", "bot"]
 
@@ -35,6 +36,7 @@ class Account(CustomBaseModel):
     """
     The name of the account.
     """
+    membershipSources: Optional[List[MembershipSource]] = None
 
 
 class ConversationAccount(CustomBaseModel):
diff --git a/packages/api/src/microsoft/teams/api/models/channel_data/__init__.py b/packages/api/src/microsoft/teams/api/models/channel_data/__init__.py
index dd960c93..ba3599b3 100644
--- a/packages/api/src/microsoft/teams/api/models/channel_data/__init__.py
+++ b/packages/api/src/microsoft/teams/api/models/channel_data/__init__.py
@@ -3,11 +3,22 @@
 Licensed under the MIT License.
 """
 
+from .app_info import AppInfo
 from .channel_data import ChannelData
 from .channel_info import ChannelInfo
 from .notification_info import NotificationInfo
+from .on_behalf_of import OnBehalfOf
 from .settings import ChannelDataSettings
 from .team_info import TeamInfo
 from .tenant_info import TenantInfo
 
-__all__ = ["ChannelInfo", "NotificationInfo", "ChannelDataSettings", "TeamInfo", "TenantInfo", "ChannelData"]
+__all__ = [
+    "ChannelInfo",
+    "NotificationInfo",
+    "ChannelDataSettings",
+    "TeamInfo",
+    "TenantInfo",
+    "ChannelData",
+    "AppInfo",
+    "OnBehalfOf",
+]
diff --git a/packages/api/src/microsoft/teams/api/models/channel_data/app_info.py b/packages/api/src/microsoft/teams/api/models/channel_data/app_info.py
new file mode 100644
index 00000000..a65c04d2
--- /dev/null
+++ b/packages/api/src/microsoft/teams/api/models/channel_data/app_info.py
@@ -0,0 +1,20 @@
+"""
+Copyright (c) Microsoft Corporation. All rights reserved.
+Licensed under the MIT License.
+"""
+
+from typing import Optional
+
+from ..custom_base_model import CustomBaseModel
+
+
+class AppInfo(CustomBaseModel):
+    """
+    An app info object that describes an app
+    """
+
+    id: str
+    "Unique identifier representing an app"
+
+    version: Optional[str] = None
+    "Version of the app manifest."
diff --git a/packages/api/src/microsoft/teams/api/models/channel_data/channel_data.py b/packages/api/src/microsoft/teams/api/models/channel_data/channel_data.py
index 216d56e0..0529b866 100644
--- a/packages/api/src/microsoft/teams/api/models/channel_data/channel_data.py
+++ b/packages/api/src/microsoft/teams/api/models/channel_data/channel_data.py
@@ -3,12 +3,15 @@
 Licensed under the MIT License.
 """
 
-from typing import Literal, Optional
+from typing import List, Literal, Optional
 
 from ..custom_base_model import CustomBaseModel
 from ..meetings import MeetingInfo
+from ..membership_source import MembershipSource
+from .app_info import AppInfo
 from .channel_info import ChannelInfo
 from .notification_info import NotificationInfo
+from .on_behalf_of import OnBehalfOf
 from .settings import ChannelDataSettings
 from .team_info import TeamInfo
 from .tenant_info import TenantInfo
@@ -54,3 +57,20 @@ class ChannelData(CustomBaseModel):
     Sequence number of the message in the stream. Starts at 1 for the first message and
     increments from there.
     """
+
+    on_behalf_of: Optional[List[OnBehalfOf]] = None
+    """Information about the users on behalf of whom the action is performed."""
+
+    shared_with_teams: Optional[List[TeamInfo]] = None
+    """List of teams that a channel was shared with."""
+
+    unshared_from_teams: Optional[List[TeamInfo]] = None
+    """List of teams that a channel was unshared from."""
+
+    membership_source: Optional[MembershipSource] = None
+    """Information about the source of the member that was added or removed froma shared channel."""
+
+    app: Optional[AppInfo] = None
+    """
+    Information about the app sending this activity.
+    """
diff --git a/packages/api/src/microsoft/teams/api/models/channel_data/on_behalf_of.py b/packages/api/src/microsoft/teams/api/models/channel_data/on_behalf_of.py
new file mode 100644
index 00000000..7b7ed008
--- /dev/null
+++ b/packages/api/src/microsoft/teams/api/models/channel_data/on_behalf_of.py
@@ -0,0 +1,26 @@
+"""
+Copyright (c) Microsoft Corporation. All rights reserved.
+Licensed under the MIT License.
+"""
+
+from typing import Optional
+
+from ..custom_base_model import CustomBaseModel
+
+
+class OnBehalfOf(CustomBaseModel):
+    """
+    Represents information about a user on behalf of whom an action is performed.
+    """
+
+    item_id: int = 0
+    "The ID of the item."
+
+    mention_type: str
+    "The type of mention."
+
+    mri: str
+    "The Microsoft Resource Identifier (MRI) of the user."
+
+    display_name: Optional[str] = None
+    "The display name of the user."
diff --git a/packages/api/src/microsoft/teams/api/models/channel_data/team_info.py b/packages/api/src/microsoft/teams/api/models/channel_data/team_info.py
index e873bf37..e2970fb9 100644
--- a/packages/api/src/microsoft/teams/api/models/channel_data/team_info.py
+++ b/packages/api/src/microsoft/teams/api/models/channel_data/team_info.py
@@ -20,7 +20,10 @@ class TeamInfo(CustomBaseModel):
     name: Optional[str] = None
     "Name of team."
 
-    team_type: Optional[Literal["standard", "sharedChannel", "privateChannel"]] = None
+    tenant_id: Optional[str] = None
+    "The tenant ID for the team."
+
+    type: Optional[Literal["standard", "sharedChannel", "privateChannel"]] = None
     "The type of the team"
 
     member_count: Optional[int] = None
diff --git a/packages/api/src/microsoft/teams/api/models/membership_source.py b/packages/api/src/microsoft/teams/api/models/membership_source.py
new file mode 100644
index 00000000..6d88166d
--- /dev/null
+++ b/packages/api/src/microsoft/teams/api/models/membership_source.py
@@ -0,0 +1,29 @@
+"""
+Copyright (c) Microsoft Corporation. All rights reserved.
+Licensed under the MIT License.
+"""
+
+from typing import Literal
+
+from .custom_base_model import CustomBaseModel
+
+
+class MembershipSource(CustomBaseModel):
+    """
+    Represents the source of a membership.
+    """
+
+    id: str
+    "The unique identifier for the membership source."
+
+    sourceType: Literal["channel", "team"]
+    "The type of roster the user is a member of."
+
+    membershipType: Literal["direct", "transitive"]
+    "The user's relationship to the current channel."
+
+    tenantId: str
+    "The tenant ID of the user."
+
+    teamGroupId: str
+    "The group ID of the team associated with this membership source."