diff --git a/api_names_out.yaml b/api_names_out.yaml
index 9432dbc325b..20cdce2f06e 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -160740,6 +160740,7 @@
 "/dataproc:v1/ClusterConfig/clusterType": cluster_type
 "/dataproc:v1/ClusterConfig/configBucket": config_bucket
 "/dataproc:v1/ClusterConfig/dataprocMetricConfig": dataproc_metric_config
+"/dataproc:v1/ClusterConfig/diagnosticBucket": diagnostic_bucket
 "/dataproc:v1/ClusterConfig/encryptionConfig": encryption_config
 "/dataproc:v1/ClusterConfig/endpointConfig": endpoint_config
 "/dataproc:v1/ClusterConfig/gceClusterConfig": gce_cluster_config
diff --git a/generated/google-apis-dataproc_v1/CHANGELOG.md b/generated/google-apis-dataproc_v1/CHANGELOG.md
index a065e67863c..da37315c655 100644
--- a/generated/google-apis-dataproc_v1/CHANGELOG.md
+++ b/generated/google-apis-dataproc_v1/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release history for google-apis-dataproc_v1
 
+### v0.86.0 (2025-11-09)
+
+* Regenerated from discovery document revision 20251104
+
 ### v0.85.0 (2025-11-02)
 
 * Regenerated from discovery document revision 20251021
diff --git a/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/classes.rb b/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/classes.rb
index f0a1cbb09c9..bb654872d56 100644
--- a/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/classes.rb
+++ b/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/classes.rb
@@ -1405,6 +1405,16 @@ class ClusterConfig
         # @return [Google::Apis::DataprocV1::DataprocMetricConfig]
         attr_accessor :dataproc_metric_config
       
+        # Optional. A Cloud Storage bucket used to collect checkpoint diagnostic data (
+        # https://cloud.google.com/dataproc/docs/support/diagnose-clusters#
+        # checkpoint_diagnostic_data). If you do not specify a diagnostic bucket, Cloud
+        # Dataproc will use the Dataproc temp bucket to collect the checkpoint
+        # diagnostic data. This field requires a Cloud Storage bucket name, not a gs://..
+        # . URI to a Cloud Storage bucket.
+        # Corresponds to the JSON property `diagnosticBucket`
+        # @return [String]
+        attr_accessor :diagnostic_bucket
+      
         # Encryption settings for the cluster.
         # Corresponds to the JSON property `encryptionConfig`
         # @return [Google::Apis::DataprocV1::EncryptionConfig]
@@ -1501,6 +1511,7 @@ def update!(**args)
           @cluster_type = args[:cluster_type] if args.key?(:cluster_type)
           @config_bucket = args[:config_bucket] if args.key?(:config_bucket)
           @dataproc_metric_config = args[:dataproc_metric_config] if args.key?(:dataproc_metric_config)
+          @diagnostic_bucket = args[:diagnostic_bucket] if args.key?(:diagnostic_bucket)
           @encryption_config = args[:encryption_config] if args.key?(:encryption_config)
           @endpoint_config = args[:endpoint_config] if args.key?(:endpoint_config)
           @gce_cluster_config = args[:gce_cluster_config] if args.key?(:gce_cluster_config)
diff --git a/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/gem_version.rb b/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/gem_version.rb
index e3786e0c32b..0f75309e2c8 100644
--- a/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/gem_version.rb
+++ b/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module DataprocV1
       # Version of the google-apis-dataproc_v1 gem
-      GEM_VERSION = "0.85.0"
+      GEM_VERSION = "0.86.0"
 
       # 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 = "20251021"
+      REVISION = "20251104"
     end
   end
 end
diff --git a/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/representations.rb b/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/representations.rb
index 155b8a26508..74992a62702 100644
--- a/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/representations.rb
+++ b/generated/google-apis-dataproc_v1/lib/google/apis/dataproc_v1/representations.rb
@@ -1978,6 +1978,7 @@ class Representation < Google::Apis::Core::JsonRepresentation
           property :config_bucket, as: 'configBucket'
           property :dataproc_metric_config, as: 'dataprocMetricConfig', class: Google::Apis::DataprocV1::DataprocMetricConfig, decorator: Google::Apis::DataprocV1::DataprocMetricConfig::Representation
       
+          property :diagnostic_bucket, as: 'diagnosticBucket'
           property :encryption_config, as: 'encryptionConfig', class: Google::Apis::DataprocV1::EncryptionConfig, decorator: Google::Apis::DataprocV1::EncryptionConfig::Representation
       
           property :endpoint_config, as: 'endpointConfig', class: Google::Apis::DataprocV1::EndpointConfig, decorator: Google::Apis::DataprocV1::EndpointConfig::Representation