diff --git a/api_names_out.yaml b/api_names_out.yaml
index 9432dbc325b..46338fc05fe 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -164641,6 +164641,7 @@
 "/datastream:v1/MongodbSourceConfig": mongodb_source_config
 "/datastream:v1/MongodbSourceConfig/excludeObjects": exclude_objects
 "/datastream:v1/MongodbSourceConfig/includeObjects": include_objects
+"/datastream:v1/MongodbSourceConfig/jsonMode": json_mode
 "/datastream:v1/MongodbSourceConfig/maxConcurrentBackfillTasks": max_concurrent_backfill_tasks
 "/datastream:v1/MongodbSslConfig": mongodb_ssl_config
 "/datastream:v1/MongodbSslConfig/caCertificate": ca_certificate
diff --git a/generated/google-apis-datastream_v1/CHANGELOG.md b/generated/google-apis-datastream_v1/CHANGELOG.md
index 42bfa0ae397..ff9c743b2a4 100644
--- a/generated/google-apis-datastream_v1/CHANGELOG.md
+++ b/generated/google-apis-datastream_v1/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release history for google-apis-datastream_v1
 
+### v0.58.0 (2025-11-09)
+
+* Regenerated from discovery document revision 20251029
+
 ### v0.57.0 (2025-11-02)
 
 * Regenerated from discovery document revision 20251021
diff --git a/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/classes.rb b/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/classes.rb
index e662ffa1a5f..e7ccc8e6a09 100644
--- a/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/classes.rb
+++ b/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/classes.rb
@@ -1573,6 +1573,11 @@ class MongodbSourceConfig
         # @return [Google::Apis::DatastreamV1::MongodbCluster]
         attr_accessor :include_objects
       
+        # Optional. MongoDB JSON mode to use for the stream.
+        # Corresponds to the JSON property `jsonMode`
+        # @return [String]
+        attr_accessor :json_mode
+      
         # Optional. Maximum number of concurrent backfill tasks. The number should be
         # non-negative and less than or equal to 50. If not set (or set to 0), the
         # system's default value is used
@@ -1588,6 +1593,7 @@ def initialize(**args)
         def update!(**args)
           @exclude_objects = args[:exclude_objects] if args.key?(:exclude_objects)
           @include_objects = args[:include_objects] if args.key?(:include_objects)
+          @json_mode = args[:json_mode] if args.key?(:json_mode)
           @max_concurrent_backfill_tasks = args[:max_concurrent_backfill_tasks] if args.key?(:max_concurrent_backfill_tasks)
         end
       end
diff --git a/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/gem_version.rb b/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/gem_version.rb
index ed57d260621..8710c93aaa5 100644
--- a/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/gem_version.rb
+++ b/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module DatastreamV1
       # Version of the google-apis-datastream_v1 gem
-      GEM_VERSION = "0.57.0"
+      GEM_VERSION = "0.58.0"
 
       # 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 = "20251029"
     end
   end
 end
diff --git a/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/representations.rb b/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/representations.rb
index 922865e83e1..9c283dfb892 100644
--- a/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/representations.rb
+++ b/generated/google-apis-datastream_v1/lib/google/apis/datastream_v1/representations.rb
@@ -1312,6 +1312,7 @@ class Representation < Google::Apis::Core::JsonRepresentation
       
           property :include_objects, as: 'includeObjects', class: Google::Apis::DatastreamV1::MongodbCluster, decorator: Google::Apis::DatastreamV1::MongodbCluster::Representation
       
+          property :json_mode, as: 'jsonMode'
           property :max_concurrent_backfill_tasks, as: 'maxConcurrentBackfillTasks'
         end
       end