diff --git a/GDTask.Nuget.Test b/GDTask.Nuget.Test
index 3c24b8e..088c42b 160000
--- a/GDTask.Nuget.Test
+++ b/GDTask.Nuget.Test
@@ -1 +1 @@
-Subproject commit 3c24b8eb3e59102f22bbb5538e4d72196374b0bb
+Subproject commit 088c42b812c23528026b890d3f4e8da919e65eab
diff --git a/GDTask/GDTask.csproj b/GDTask/GDTask.csproj
index 2265030..82a6ac5 100644
--- a/GDTask/GDTask.csproj
+++ b/GDTask/GDTask.csproj
@@ -14,7 +14,7 @@
 
     <Title>GDTask</Title>
     <PackageId>GDTask</PackageId>
-    <PackageVersion>1.2.0</PackageVersion>
+    <PackageVersion>1.2.1</PackageVersion>
     <Authors>DE-YU, Atlinx, Yoshifumi Kawai / Cysharp</Authors>
     <Description>Provides an efficient async/await integration to Godot 4.1+</Description>
     <PackageProjectUrl>https://www.nuget.org/packages/GDTask</PackageProjectUrl>
@@ -23,7 +23,7 @@
     <RepositoryUrl>https://github.com/Delsin-Yu/GDTask.Nuget</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
     <PackageTags>Godot GDTask GodotTask Task Async</PackageTags>
-    <PackageReleaseNotes>Fix an issue that accidentally exposes the `GDTask.Internal` namespace, which causes inconveniences when referencing the `GDTask` type.</PackageReleaseNotes>
+    <PackageReleaseNotes>The `PlayerLoopTiming` enum now has `IsolatedProcess` and `IsolatedPhysicsProcess` for running async APIs when the scene tree has paused.</PackageReleaseNotes>
     <PackageLicenseFile>LICENSE.md</PackageLicenseFile>
     
     <IncludeSymbols>true</IncludeSymbols>
diff --git a/GDTask/src/AsyncUnit.cs b/GDTask/src/AsyncUnit.cs
index d604245..140b249 100644
--- a/GDTask/src/AsyncUnit.cs
+++ b/GDTask/src/AsyncUnit.cs
@@ -14,7 +14,7 @@ namespace GodotTask
 
         public override string ToString() => "()";
 
-        public override bool Equals(object? obj) => obj is AsyncUnit;
+        public override bool Equals(object obj) => obj is AsyncUnit;
 
         public static bool operator ==(AsyncUnit left, AsyncUnit right) => true;
 
diff --git a/GDTask/src/CompilerServices/IsolatedGDTaskPlayerLoopRunner.cs b/GDTask/src/CompilerServices/IsolatedGDTaskPlayerLoopRunner.cs
index 52efa48..d47db55 100644
--- a/GDTask/src/CompilerServices/IsolatedGDTaskPlayerLoopRunner.cs
+++ b/GDTask/src/CompilerServices/IsolatedGDTaskPlayerLoopRunner.cs
@@ -2,7 +2,7 @@
 
 namespace GodotTask.CompilerServices;
 
-internal class IsolatedGDTaskPlayerLoopRunner : Node
+internal partial class IsolatedGDTaskPlayerLoopRunner : Node
 {
     private readonly GDTaskPlayerLoopRunner _playerLoopRunner;
 
diff --git a/GDTask/src/Internal/TaskTracker.Models.cs b/GDTask/src/Internal/TaskTracker.Models.cs
index fc36a21..4090f0e 100644
--- a/GDTask/src/Internal/TaskTracker.Models.cs
+++ b/GDTask/src/Internal/TaskTracker.Models.cs
@@ -32,7 +32,7 @@ public bool Value
             }
         }
 
-        private IObserver<bool>? _singleSubscriber;
+        private IObserver<bool> _singleSubscriber;
 
         private bool _value;
 
diff --git a/GDTask/src/Internal/TaskTrackerWindow.cs b/GDTask/src/Internal/TaskTrackerWindow.cs
index e92cd27..083d672 100644
--- a/GDTask/src/Internal/TaskTrackerWindow.cs
+++ b/GDTask/src/Internal/TaskTrackerWindow.cs
@@ -8,11 +8,11 @@ namespace GodotTask;
 
 internal partial class TaskTrackerWindow : Window
 {
-    private static TaskTrackerWindow? _instance;
-    private static StringBuilder? _stringBuilder;
+    private static TaskTrackerWindow _instance;
+    private static StringBuilder _stringBuilder;
     
 #if !NET7_0_OR_GREATER
-    private static Regex _removeHrefLabel = new("<a href.+>(.+)</a>", RegexOptions.Compiled);
+    private static readonly Regex _removeHrefLabel = new("<a href.+>(.+)</a>", RegexOptions.Compiled);
 #endif
     
 #if NET7_0_OR_GREATER
@@ -58,7 +58,7 @@ internal static void TryAddItem(TaskTracker.TrackingData trackingData)
             var trackingDataMap = _instance._trackingDataMap;
             var treeItemMap = _instance._treeItemMap;
             var tree = _instance._tree;
-            TreeItem? treeItem;
+            TreeItem treeItem;
             if (!trackingDataMap.TryGetValue(trackingData, out treeItem))
             {
                 treeItem = tree.CreateItem(_instance._rootTreeItem, trackingData.TrackingId);
diff --git a/GDTask/src/Internal/TypePrinter.cs b/GDTask/src/Internal/TypePrinter.cs
index 5867ea3..39f6bbe 100644
--- a/GDTask/src/Internal/TypePrinter.cs
+++ b/GDTask/src/Internal/TypePrinter.cs
@@ -1,4 +1,5 @@
-using System;
+#nullable enable
+using System;
 using System.Collections.Generic;
 using System.Text;