diff --git a/DiscoveryJson/tasks.v1.json b/DiscoveryJson/tasks.v1.json
index 97c7d8efd4c..6a25e448fc0 100644
--- a/DiscoveryJson/tasks.v1.json
+++ b/DiscoveryJson/tasks.v1.json
@@ -475,12 +475,12 @@
               "type": "string"
             },
             "parent": {
-              "description": "New parent task identifier. If the task is moved to the top level, this parameter is omitted. Assigned tasks can not be set as parent task (have subtasks) or be moved under a parent task (become subtasks). Optional.",
+              "description": "New parent task identifier. If the task is moved to the top level, this parameter is omitted. The task set as parent must exist in the task list and can not be hidden. Assigned tasks can not be set as parent task (have subtasks) or be moved under a parent task (become subtasks). Optional.",
               "location": "query",
               "type": "string"
             },
             "previous": {
-              "description": "New previous sibling task identifier. If the task is moved to the first position among its siblings, this parameter is omitted. Optional.",
+              "description": "New previous sibling task identifier. If the task is moved to the first position among its siblings, this parameter is omitted. The task set as previous must exist in the task list and can not be hidden. Optional.",
               "location": "query",
               "type": "string"
             },
@@ -576,7 +576,7 @@
       }
     }
   },
-  "revision": "20240630",
+  "revision": "20250105",
   "rootUrl": "https://tasks.googleapis.com/",
   "schemas": {
     "AssignmentInfo": {
diff --git a/Src/Generated/Google.Apis.Tasks.v1/Google.Apis.Tasks.v1.cs b/Src/Generated/Google.Apis.Tasks.v1/Google.Apis.Tasks.v1.cs
index 57c125f68bc..430d6feff3c 100644
--- a/Src/Generated/Google.Apis.Tasks.v1/Google.Apis.Tasks.v1.cs
+++ b/Src/Generated/Google.Apis.Tasks.v1/Google.Apis.Tasks.v1.cs
@@ -1,4 +1,4 @@
-// Copyright 2024 Google LLC
+// Copyright 2025 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -1133,16 +1133,17 @@ public MoveRequest(Google.Apis.Services.IClientService service, string tasklist,
             public virtual string DestinationTasklist { get; set; }
 
             /// <summary>
-            /// New parent task identifier. If the task is moved to the top level, this parameter is omitted. Assigned
-            /// tasks can not be set as parent task (have subtasks) or be moved under a parent task (become subtasks).
-            /// Optional.
+            /// New parent task identifier. If the task is moved to the top level, this parameter is omitted. The task
+            /// set as parent must exist in the task list and can not be hidden. Assigned tasks can not be set as parent
+            /// task (have subtasks) or be moved under a parent task (become subtasks). Optional.
             /// </summary>
             [Google.Apis.Util.RequestParameterAttribute("parent", Google.Apis.Util.RequestParameterType.Query)]
             public virtual string Parent { get; set; }
 
             /// <summary>
             /// New previous sibling task identifier. If the task is moved to the first position among its siblings,
-            /// this parameter is omitted. Optional.
+            /// this parameter is omitted. The task set as previous must exist in the task list and can not be hidden.
+            /// Optional.
             /// </summary>
             [Google.Apis.Util.RequestParameterAttribute("previous", Google.Apis.Util.RequestParameterType.Query)]
             public virtual string Previous { get; set; }
diff --git a/Src/Generated/Google.Apis.Tasks.v1/Google.Apis.Tasks.v1.csproj b/Src/Generated/Google.Apis.Tasks.v1/Google.Apis.Tasks.v1.csproj
index 9a82b9ed7dc..9c303cf08a7 100644
--- a/Src/Generated/Google.Apis.Tasks.v1/Google.Apis.Tasks.v1.csproj
+++ b/Src/Generated/Google.Apis.Tasks.v1/Google.Apis.Tasks.v1.csproj
@@ -3,9 +3,9 @@
   <!-- nupkg information -->
   <PropertyGroup>
     <Title>Google.Apis.Tasks.v1 Client Library</Title>
-    <Version>1.68.0.3468</Version>
+    <Version>1.68.0.3657</Version>
     <Authors>Google LLC</Authors>
-    <Copyright>Copyright 2024 Google LLC</Copyright>
+    <Copyright>Copyright 2025 Google LLC</Copyright>
     <PackageTags>Google</PackageTags>
     <PackageProjectUrl>https://github.com/google/google-api-dotnet-client</PackageProjectUrl>
     <PackageLicenseExpression>Apache-2.0</PackageLicenseExpression>