diff --git a/api_names_out.yaml b/api_names_out.yaml
index 6daf840d3ec..50b4fb9b0cd 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -56025,6 +56025,7 @@
 "/backupdr:v1/ComputeInstanceRestoreProperties/tags": tags
 "/backupdr:v1/ComputeInstanceTargetEnvironment": compute_instance_target_environment
 "/backupdr:v1/ComputeInstanceTargetEnvironment/project": project
+"/backupdr:v1/ComputeInstanceTargetEnvironment/useProjectServiceAccount": use_project_service_account
 "/backupdr:v1/ComputeInstanceTargetEnvironment/zone": zone
 "/backupdr:v1/ConfidentialInstanceConfig": confidential_instance_config
 "/backupdr:v1/ConfidentialInstanceConfig/enableConfidentialCompute": enable_confidential_compute
@@ -56142,6 +56143,7 @@
 "/backupdr:v1/DiskRestoreProperties/type": type
 "/backupdr:v1/DiskTargetEnvironment": disk_target_environment
 "/backupdr:v1/DiskTargetEnvironment/project": project
+"/backupdr:v1/DiskTargetEnvironment/useProjectServiceAccount": use_project_service_account
 "/backupdr:v1/DiskTargetEnvironment/zone": zone
 "/backupdr:v1/DisplayDevice": display_device
 "/backupdr:v1/DisplayDevice/enableDisplay": enable_display
@@ -56440,6 +56442,7 @@
 "/backupdr:v1/RegionDiskTargetEnvironment/region": region
 "/backupdr:v1/RegionDiskTargetEnvironment/replicaZones": replica_zones
 "/backupdr:v1/RegionDiskTargetEnvironment/replicaZones/replica_zone": replica_zone
+"/backupdr:v1/RegionDiskTargetEnvironment/useProjectServiceAccount": use_project_service_account
 "/backupdr:v1/RegionalMigDistributionPolicy": regional_mig_distribution_policy
 "/backupdr:v1/RegionalMigDistributionPolicy/targetShape": target_shape
 "/backupdr:v1/RegionalMigDistributionPolicy/zones": zones
diff --git a/generated/google-apis-backupdr_v1/CHANGELOG.md b/generated/google-apis-backupdr_v1/CHANGELOG.md
index 9072f528c0c..eb83fda43b7 100644
--- a/generated/google-apis-backupdr_v1/CHANGELOG.md
+++ b/generated/google-apis-backupdr_v1/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release history for google-apis-backupdr_v1
 
+### v0.57.0 (2026-05-24)
+
+* Regenerated from discovery document revision 20260517
+
 ### v0.56.0 (2026-05-17)
 
 * Regenerated from discovery document revision 20260510
diff --git a/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/classes.rb b/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/classes.rb
index 89805c10b93..cc34d0009be 100644
--- a/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/classes.rb
+++ b/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/classes.rb
@@ -2413,6 +2413,13 @@ class ComputeInstanceTargetEnvironment
         # @return [String]
         attr_accessor :project
       
+        # Optional. Whether to use the project service account for the Compute Engine
+        # instance.
+        # Corresponds to the JSON property `useProjectServiceAccount`
+        # @return [Boolean]
+        attr_accessor :use_project_service_account
+        alias_method :use_project_service_account?, :use_project_service_account
+      
         # Required. The zone of the Compute Engine instance.
         # Corresponds to the JSON property `zone`
         # @return [String]
@@ -2425,6 +2432,7 @@ def initialize(**args)
         # Update properties of this object
         def update!(**args)
           @project = args[:project] if args.key?(:project)
+          @use_project_service_account = args[:use_project_service_account] if args.key?(:use_project_service_account)
           @zone = args[:zone] if args.key?(:zone)
         end
       end
@@ -3185,6 +3193,12 @@ class DiskTargetEnvironment
         # @return [String]
         attr_accessor :project
       
+        # Optional. Whether to use the project service account for the disk.
+        # Corresponds to the JSON property `useProjectServiceAccount`
+        # @return [Boolean]
+        attr_accessor :use_project_service_account
+        alias_method :use_project_service_account?, :use_project_service_account
+      
         # Required. Target zone for the disk.
         # Corresponds to the JSON property `zone`
         # @return [String]
@@ -3197,6 +3211,7 @@ def initialize(**args)
         # Update properties of this object
         def update!(**args)
           @project = args[:project] if args.key?(:project)
+          @use_project_service_account = args[:use_project_service_account] if args.key?(:use_project_service_account)
           @zone = args[:zone] if args.key?(:zone)
         end
       end
@@ -5196,6 +5211,12 @@ class RegionDiskTargetEnvironment
         # @return [Array<String>]
         attr_accessor :replica_zones
       
+        # Optional. Whether to use the project service account for the disk.
+        # Corresponds to the JSON property `useProjectServiceAccount`
+        # @return [Boolean]
+        attr_accessor :use_project_service_account
+        alias_method :use_project_service_account?, :use_project_service_account
+      
         def initialize(**args)
            update!(**args)
         end
@@ -5205,6 +5226,7 @@ def update!(**args)
           @project = args[:project] if args.key?(:project)
           @region = args[:region] if args.key?(:region)
           @replica_zones = args[:replica_zones] if args.key?(:replica_zones)
+          @use_project_service_account = args[:use_project_service_account] if args.key?(:use_project_service_account)
         end
       end
       
diff --git a/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/gem_version.rb b/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/gem_version.rb
index b6aa419b23c..218633ca9e5 100644
--- a/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/gem_version.rb
+++ b/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module BackupdrV1
       # Version of the google-apis-backupdr_v1 gem
-      GEM_VERSION = "0.56.0"
+      GEM_VERSION = "0.57.0"
 
       # Version of the code generator used to generate this client
       GENERATOR_VERSION = "0.18.0"
 
       # Revision of the discovery document this client was generated from
-      REVISION = "20260510"
+      REVISION = "20260517"
     end
   end
 end
diff --git a/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/representations.rb b/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/representations.rb
index 371442d3c0a..b22642d877f 100644
--- a/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/representations.rb
+++ b/generated/google-apis-backupdr_v1/lib/google/apis/backupdr_v1/representations.rb
@@ -1407,6 +1407,7 @@ class ComputeInstanceTargetEnvironment
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
           property :project, as: 'project'
+          property :use_project_service_account, as: 'useProjectServiceAccount'
           property :zone, as: 'zone'
         end
       end
@@ -1592,6 +1593,7 @@ class DiskTargetEnvironment
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
           property :project, as: 'project'
+          property :use_project_service_account, as: 'useProjectServiceAccount'
           property :zone, as: 'zone'
         end
       end
@@ -2123,6 +2125,7 @@ class Representation < Google::Apis::Core::JsonRepresentation
           property :project, as: 'project'
           property :region, as: 'region'
           collection :replica_zones, as: 'replicaZones'
+          property :use_project_service_account, as: 'useProjectServiceAccount'
         end
       end