diff --git a/generated/google-apis-documentai_v1beta3/CHANGELOG.md b/generated/google-apis-documentai_v1beta3/CHANGELOG.md
index fa15508e9ce..97d65076ab4 100644
--- a/generated/google-apis-documentai_v1beta3/CHANGELOG.md
+++ b/generated/google-apis-documentai_v1beta3/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release history for google-apis-documentai_v1beta3
 
+### v0.126.0 (2026-05-17)
+
+* Regenerated from discovery document revision 20260503
+
 ### v0.125.0 (2026-04-19)
 
 * Regenerated from discovery document revision 20260325
diff --git a/generated/google-apis-documentai_v1beta3/lib/google/apis/documentai_v1beta3/gem_version.rb b/generated/google-apis-documentai_v1beta3/lib/google/apis/documentai_v1beta3/gem_version.rb
index 11279ba94e6..fa42c67f204 100644
--- a/generated/google-apis-documentai_v1beta3/lib/google/apis/documentai_v1beta3/gem_version.rb
+++ b/generated/google-apis-documentai_v1beta3/lib/google/apis/documentai_v1beta3/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module DocumentaiV1beta3
       # Version of the google-apis-documentai_v1beta3 gem
-      GEM_VERSION = "0.125.0"
+      GEM_VERSION = "0.126.0"
 
       # 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 = "20260325"
+      REVISION = "20260503"
     end
   end
 end
diff --git a/generated/google-apis-documentai_v1beta3/lib/google/apis/documentai_v1beta3/service.rb b/generated/google-apis-documentai_v1beta3/lib/google/apis/documentai_v1beta3/service.rb
index 7a4363e4683..5c02844b243 100644
--- a/generated/google-apis-documentai_v1beta3/lib/google/apis/documentai_v1beta3/service.rb
+++ b/generated/google-apis-documentai_v1beta3/lib/google/apis/documentai_v1beta3/service.rb
@@ -116,8 +116,8 @@ 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,
@@ -128,8 +128,8 @@ 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