diff --git a/docs/resources/group.md b/docs/resources/group.md
index 718355b83..c222983dc 100644
--- a/docs/resources/group.md
+++ b/docs/resources/group.md
@@ -119,7 +119,7 @@ The following arguments are supported:
 
 ~> **Known Permissions Issue** The `auto_subscribe_new_members` property can only be set when authenticating as a Member user of the tenant and _not_ when authenticating as a Guest user or as a service principal. Please see the [Microsoft Graph Known Issues](https://docs.microsoft.com/en-us/graph/known-issues#groups) documentation.
 
-* `behaviors` - (Optional) A set of behaviors for a Microsoft 365 group. Possible values are `AllowOnlyMembersToPost`, `HideGroupInOutlook`, `SubscribeMembersToCalendarEventsDisabled`, `SubscribeNewGroupMembers` and `WelcomeEmailDisabled`. See [official documentation](https://docs.microsoft.com/en-us/graph/group-set-options) for more details. Changing this forces a new resource to be created.
+* `behaviors` - (Optional) A set of behaviors for a Microsoft 365 group. Possible values are `AllowOnlyMembersToPost`, `HideGroupInOutlook`, `SkipExchangeInstantOn`, `SubscribeMembersToCalendarEventsDisabled`, `SubscribeNewGroupMembers` and `WelcomeEmailDisabled`. See [official documentation](https://docs.microsoft.com/en-us/graph/group-set-options) for more details. Changing this forces a new resource to be created.
 * `description` - (Optional) The description for the group.
 * `display_name` - (Required) The display name for the group.
 * `dynamic_membership` - (Optional) A `dynamic_membership` block as documented below. Required when `types` contains `DynamicMembership`. Cannot be used with the `members` property.
diff --git a/internal/services/groups/group_resource.go b/internal/services/groups/group_resource.go
index e50090154..64fdf01de 100644
--- a/internal/services/groups/group_resource.go
+++ b/internal/services/groups/group_resource.go
@@ -96,6 +96,7 @@ func groupResource() *pluginsdk.Resource {
 						msgraph.GroupResourceBehaviorOptionCalendarMemberReadOnly,
 						msgraph.GroupResourceBehaviorOptionConnectorsDisabled,
 						msgraph.GroupResourceBehaviorOptionHideGroupInOutlook,
+						msgraph.GroupResourceBehaviorOptionSkipExchangeInstantOn,
 						msgraph.GroupResourceBehaviorOptionSubscribeMembersToCalendarEventsDisabled,
 						msgraph.GroupResourceBehaviorOptionSubscribeNewGroupMembers,
 						msgraph.GroupResourceBehaviorOptionWelcomeEmailDisabled,