diff --git a/api_names_out.yaml b/api_names_out.yaml
index 9432dbc325b..8868c00035b 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -328306,6 +328306,8 @@
 "/pubsub:v1/CreateSnapshotRequest/labels": labels
 "/pubsub:v1/CreateSnapshotRequest/labels/label": label
 "/pubsub:v1/CreateSnapshotRequest/subscription": subscription
+"/pubsub:v1/CreateSnapshotRequest/tags": tags
+"/pubsub:v1/CreateSnapshotRequest/tags/tag": tag
 "/pubsub:v1/DeadLetterPolicy": dead_letter_policy
 "/pubsub:v1/DeadLetterPolicy/deadLetterTopic": dead_letter_topic
 "/pubsub:v1/DeadLetterPolicy/maxDeliveryAttempts": max_delivery_attempts
@@ -328463,6 +328465,8 @@
 "/pubsub:v1/Subscription/retainAckedMessages": retain_acked_messages
 "/pubsub:v1/Subscription/retryPolicy": retry_policy
 "/pubsub:v1/Subscription/state": state
+"/pubsub:v1/Subscription/tags": tags
+"/pubsub:v1/Subscription/tags/tag": tag
 "/pubsub:v1/Subscription/topic": topic
 "/pubsub:v1/Subscription/topicMessageRetentionDuration": topic_message_retention_duration
 "/pubsub:v1/TestIamPermissionsRequest": test_iam_permissions_request
@@ -328487,6 +328491,8 @@
 "/pubsub:v1/Topic/satisfiesPzs": satisfies_pzs
 "/pubsub:v1/Topic/schemaSettings": schema_settings
 "/pubsub:v1/Topic/state": state
+"/pubsub:v1/Topic/tags": tags
+"/pubsub:v1/Topic/tags/tag": tag
 "/pubsub:v1/UpdateSnapshotRequest": update_snapshot_request
 "/pubsub:v1/UpdateSnapshotRequest/snapshot": snapshot
 "/pubsub:v1/UpdateSnapshotRequest/updateMask": update_mask
diff --git a/generated/google-apis-pubsub_v1/CHANGELOG.md b/generated/google-apis-pubsub_v1/CHANGELOG.md
index 3ee14009a8f..0b4099880cd 100644
--- a/generated/google-apis-pubsub_v1/CHANGELOG.md
+++ b/generated/google-apis-pubsub_v1/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Release history for google-apis-pubsub_v1
 
+### v0.63.0 (2025-11-09)
+
+* Regenerated from discovery document revision 20251025
+* Regenerated using generator version 0.18.0
+
 ### v0.62.0 (2025-05-04)
 
 * Regenerated using generator version 0.17.0
diff --git a/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/classes.rb b/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/classes.rb
index be205cc7f30..a3934b96927 100644
--- a/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/classes.rb
+++ b/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/classes.rb
@@ -723,6 +723,13 @@ class CreateSnapshotRequest
         # @return [String]
         attr_accessor :subscription
       
+        # Optional. Input only. Immutable. Tag keys/values directly bound to this
+        # resource. For example: "123/environment": "production", "123/costCenter": "
+        # marketing"
+        # Corresponds to the JSON property `tags`
+        # @return [Hash<String,String>]
+        attr_accessor :tags
+      
         def initialize(**args)
            update!(**args)
         end
@@ -731,6 +738,7 @@ def initialize(**args)
         def update!(**args)
           @labels = args[:labels] if args.key?(:labels)
           @subscription = args[:subscription] if args.key?(:subscription)
+          @tags = args[:tags] if args.key?(:tags)
         end
       end
       
@@ -2179,6 +2187,13 @@ class Subscription
         # @return [String]
         attr_accessor :state
       
+        # Optional. Input only. Immutable. Tag keys/values directly bound to this
+        # resource. For example: "123/environment": "production", "123/costCenter": "
+        # marketing"
+        # Corresponds to the JSON property `tags`
+        # @return [Hash<String,String>]
+        attr_accessor :tags
+      
         # Required. The name of the topic from which this subscription is receiving
         # messages. Format is `projects/`project`/topics/`topic``. The value of this
         # field will be `_deleted-topic_` if the topic has been deleted.
@@ -2220,6 +2235,7 @@ def update!(**args)
           @retain_acked_messages = args[:retain_acked_messages] if args.key?(:retain_acked_messages)
           @retry_policy = args[:retry_policy] if args.key?(:retry_policy)
           @state = args[:state] if args.key?(:state)
+          @tags = args[:tags] if args.key?(:tags)
           @topic = args[:topic] if args.key?(:topic)
           @topic_message_retention_duration = args[:topic_message_retention_duration] if args.key?(:topic_message_retention_duration)
         end
@@ -2371,6 +2387,13 @@ class Topic
         # @return [String]
         attr_accessor :state
       
+        # Optional. Input only. Immutable. Tag keys/values directly bound to this
+        # resource. For example: "123/environment": "production", "123/costCenter": "
+        # marketing"
+        # Corresponds to the JSON property `tags`
+        # @return [Hash<String,String>]
+        attr_accessor :tags
+      
         def initialize(**args)
            update!(**args)
         end
@@ -2387,6 +2410,7 @@ def update!(**args)
           @satisfies_pzs = args[:satisfies_pzs] if args.key?(:satisfies_pzs)
           @schema_settings = args[:schema_settings] if args.key?(:schema_settings)
           @state = args[:state] if args.key?(:state)
+          @tags = args[:tags] if args.key?(:tags)
         end
       end
       
diff --git a/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/gem_version.rb b/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/gem_version.rb
index 3a99a9d0056..5fba74f1773 100644
--- a/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/gem_version.rb
+++ b/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module PubsubV1
       # Version of the google-apis-pubsub_v1 gem
-      GEM_VERSION = "0.62.0"
+      GEM_VERSION = "0.63.0"
 
       # Version of the code generator used to generate this client
-      GENERATOR_VERSION = "0.17.0"
+      GENERATOR_VERSION = "0.18.0"
 
       # Revision of the discovery document this client was generated from
-      REVISION = "20250414"
+      REVISION = "20251025"
     end
   end
 end
diff --git a/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/representations.rb b/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/representations.rb
index ddd36be197a..0ea765210fb 100644
--- a/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/representations.rb
+++ b/generated/google-apis-pubsub_v1/lib/google/apis/pubsub_v1/representations.rb
@@ -566,6 +566,7 @@ class CreateSnapshotRequest
         class Representation < Google::Apis::Core::JsonRepresentation
           hash :labels, as: 'labels'
           property :subscription, as: 'subscription'
+          hash :tags, as: 'tags'
         end
       end
       
@@ -934,6 +935,7 @@ class Representation < Google::Apis::Core::JsonRepresentation
           property :retry_policy, as: 'retryPolicy', class: Google::Apis::PubsubV1::RetryPolicy, decorator: Google::Apis::PubsubV1::RetryPolicy::Representation
       
           property :state, as: 'state'
+          hash :tags, as: 'tags'
           property :topic, as: 'topic'
           property :topic_message_retention_duration, as: 'topicMessageRetentionDuration'
         end
@@ -983,6 +985,7 @@ class Representation < Google::Apis::Core::JsonRepresentation
           property :schema_settings, as: 'schemaSettings', class: Google::Apis::PubsubV1::SchemaSettings, decorator: Google::Apis::PubsubV1::SchemaSettings::Representation
       
           property :state, as: 'state'
+          hash :tags, as: 'tags'
         end
       end