diff --git a/generated/google-apis-parametermanager_v1/CHANGELOG.md b/generated/google-apis-parametermanager_v1/CHANGELOG.md
index 80b4cf48130..7e30d9461ae 100644
--- a/generated/google-apis-parametermanager_v1/CHANGELOG.md
+++ b/generated/google-apis-parametermanager_v1/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release history for google-apis-parametermanager_v1
 
+### v0.4.0 (2025-11-02)
+
+* Regenerated from discovery document revision 20251025
+
 ### v0.3.0 (2025-09-21)
 
 * Regenerated from discovery document revision 20250910
diff --git a/generated/google-apis-parametermanager_v1/lib/google/apis/parametermanager_v1/gem_version.rb b/generated/google-apis-parametermanager_v1/lib/google/apis/parametermanager_v1/gem_version.rb
index 129e8964754..cbb12bd141f 100644
--- a/generated/google-apis-parametermanager_v1/lib/google/apis/parametermanager_v1/gem_version.rb
+++ b/generated/google-apis-parametermanager_v1/lib/google/apis/parametermanager_v1/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module ParametermanagerV1
       # Version of the google-apis-parametermanager_v1 gem
-      GEM_VERSION = "0.3.0"
+      GEM_VERSION = "0.4.0"
 
       # 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 = "20250910"
+      REVISION = "20251025"
     end
   end
 end
diff --git a/generated/google-apis-parametermanager_v1/lib/google/apis/parametermanager_v1/service.rb b/generated/google-apis-parametermanager_v1/lib/google/apis/parametermanager_v1/service.rb
index 91a849414b0..65988089d3d 100644
--- a/generated/google-apis-parametermanager_v1/lib/google/apis/parametermanager_v1/service.rb
+++ b/generated/google-apis-parametermanager_v1/lib/google/apis/parametermanager_v1/service.rb
@@ -88,8 +88,8 @@ 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. Unless explicitly documented otherwise, don't use this unsupported
-        #   field which is primarily intended for internal usage.
+        #   Optional. Do not use this field. It is unsupported and is ignored 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