diff --git a/generated/google-apis-cloudidentity_v1/CHANGELOG.md b/generated/google-apis-cloudidentity_v1/CHANGELOG.md
index 95048e27124..91594d89431 100644
--- a/generated/google-apis-cloudidentity_v1/CHANGELOG.md
+++ b/generated/google-apis-cloudidentity_v1/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release history for google-apis-cloudidentity_v1
 
+### v0.53.0 (2025-10-26)
+
+* Regenerated from discovery document revision 20251021
+
 ### v0.52.0 (2025-09-28)
 
 * Regenerated from discovery document revision 20250923
diff --git a/generated/google-apis-cloudidentity_v1/lib/google/apis/cloudidentity_v1/gem_version.rb b/generated/google-apis-cloudidentity_v1/lib/google/apis/cloudidentity_v1/gem_version.rb
index 4953e4b9f6d..e189e6f866a 100644
--- a/generated/google-apis-cloudidentity_v1/lib/google/apis/cloudidentity_v1/gem_version.rb
+++ b/generated/google-apis-cloudidentity_v1/lib/google/apis/cloudidentity_v1/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module CloudidentityV1
       # Version of the google-apis-cloudidentity_v1 gem
-      GEM_VERSION = "0.52.0"
+      GEM_VERSION = "0.53.0"
 
       # 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 = "20250923"
+      REVISION = "20251021"
     end
   end
 end
diff --git a/generated/google-apis-cloudidentity_v1/lib/google/apis/cloudidentity_v1/service.rb b/generated/google-apis-cloudidentity_v1/lib/google/apis/cloudidentity_v1/service.rb
index fc21bf67381..7cd3ecfde0e 100644
--- a/generated/google-apis-cloudidentity_v1/lib/google/apis/cloudidentity_v1/service.rb
+++ b/generated/google-apis-cloudidentity_v1/lib/google/apis/cloudidentity_v1/service.rb
@@ -2568,7 +2568,7 @@ def patch_inbound_sso_assignment(name, inbound_sso_assignment_object = nil, upda
           execute_or_queue_command(command, &block)
         end
         
-        # Get a Policy
+        # Get a policy.
         # @param [String] name
         #   Required. The name of the policy to retrieve. Format: "policies/`policy`".
         # @param [String] fields
@@ -2598,7 +2598,7 @@ def get_policy(name, fields: nil, quota_user: nil, options: nil, &block)
           execute_or_queue_command(command, &block)
         end
         
-        # List Policies
+        # List policies.
         # @param [String] filter
         #   Optional. A CEL expression for filtering the results. Policies can be filtered
         #   by application with this expression: setting.type.matches('^settings/gmail\\..*