diff --git a/api_names_out.yaml b/api_names_out.yaml
index 6daf840d3ec..143ac4295a5 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -335598,6 +335598,7 @@
 "/notebooks:v2/UpgradeHistoryEntry/version": version
 "/notebooks:v2/UpgradeHistoryEntry/vmImage": vm_image
 "/notebooks:v2/UpgradeInstanceRequest": upgrade_instance_request
+"/notebooks:v2/UpgradeInstanceRequest/imageFamily": image_family
 "/notebooks:v2/UpgradeInstanceSystemRequest": upgrade_instance_system_request
 "/notebooks:v2/UpgradeInstanceSystemRequest/vmId": vm_id
 "/notebooks:v2/VmImage": vm_image
diff --git a/generated/google-apis-notebooks_v2/CHANGELOG.md b/generated/google-apis-notebooks_v2/CHANGELOG.md
index 1c5d1228191..9b778278531 100644
--- a/generated/google-apis-notebooks_v2/CHANGELOG.md
+++ b/generated/google-apis-notebooks_v2/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release history for google-apis-notebooks_v2
 
+### v0.33.0 (2026-05-24)
+
+* Regenerated from discovery document revision 20260521
+
 ### v0.32.0 (2026-04-19)
 
 * Regenerated from discovery document revision 20260401
diff --git a/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/classes.rb b/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/classes.rb
index 8ced94967d7..9b1d62736fa 100644
--- a/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/classes.rb
+++ b/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/classes.rb
@@ -1956,12 +1956,22 @@ def update!(**args)
       class UpgradeInstanceRequest
         include Google::Apis::Core::Hashable
       
+        # Optional. The Compute Engine image family resource name to upgrade to. Format:
+        # `projects/`project_id`/global/images/family/`image_family`` If specified, the
+        # instance will be upgraded to the latest image in the specified image family,
+        # allowing upgrades across image families. If not specified, the instance will
+        # be upgraded to the latest image in its current image family.
+        # Corresponds to the JSON property `imageFamily`
+        # @return [String]
+        attr_accessor :image_family
+      
         def initialize(**args)
            update!(**args)
         end
       
         # Update properties of this object
         def update!(**args)
+          @image_family = args[:image_family] if args.key?(:image_family)
         end
       end
       
diff --git a/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/gem_version.rb b/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/gem_version.rb
index e3facd5ffb0..bcd381bb2cf 100644
--- a/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/gem_version.rb
+++ b/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module NotebooksV2
       # Version of the google-apis-notebooks_v2 gem
-      GEM_VERSION = "0.32.0"
+      GEM_VERSION = "0.33.0"
 
       # 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 = "20260401"
+      REVISION = "20260521"
     end
   end
 end
diff --git a/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/representations.rb b/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/representations.rb
index 9fb0fe32d30..6444a4dbc4c 100644
--- a/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/representations.rb
+++ b/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/representations.rb
@@ -819,6 +819,7 @@ class Representation < Google::Apis::Core::JsonRepresentation
       class UpgradeInstanceRequest
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
+          property :image_family, as: 'imageFamily'
         end
       end
       
diff --git a/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/service.rb b/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/service.rb
index a6a30ac287b..2af95069555 100644
--- a/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/service.rb
+++ b/generated/google-apis-notebooks_v2/lib/google/apis/notebooks_v2/service.rb
@@ -82,8 +82,8 @@ def get_project_location(name, fields: nil, quota_user: nil, options: nil, &bloc
         end
         
         # Lists information about the supported locations for this service. This method
-        # lists locations based on the resource scope provided in the [
-        # ListLocationsRequest.name] field: * **Global locations**: If `name` is empty,
+        # lists locations based on the resource scope provided in the
+        # ListLocationsRequest.name field: * **Global locations**: If `name` is empty,
         # the method lists the public locations available to all projects. * **Project-
         # specific locations**: If `name` follows the format `projects/`project``, the
         # method lists locations visible to that specific project. This includes public,
@@ -94,8 +94,8 @@ def get_project_location(name, fields: nil, quota_user: nil, options: nil, &bloc
         # @param [String] name
         #   The resource that owns the locations collection, if applicable.
         # @param [Array<String>, String] extra_location_types
-        #   Optional. Do not use this field. It is unsupported and is ignored unless
-        #   explicitly documented otherwise. This is primarily for internal usage.
+        #   Optional. Do not use this field unless explicitly documented otherwise. This
+        #   is primarily for internal usage.
         # @param [String] filter
         #   A filter to narrow down results to a preferred subset. The filtering language
         #   accepts strings like `"displayName=tokyo"`, and is documented in more detail