diff --git a/api/Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.html b/api/Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.html
index 75d69a5..2bfadb8 100644
--- a/api/Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.html
+++ b/api/Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.html
@@ -2030,6 +2030,18 @@
         </td>
         <td class="markdown level1 summary"></td>
       </tr>
+      <tr>
+        <td>
+          <a class="xref" href="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.html#Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_SkipUntil__1_Cysharp_Threading_Tasks_IUniTaskAsyncEnumerable___0__Cysharp_Threading_Tasks_UniTask_">SkipUntil&lt;TSource&gt;(IUniTaskAsyncEnumerable&lt;TSource&gt;, UniTask)</a>
+        </td>
+        <td class="markdown level1 summary"></td>
+      </tr>
+      <tr>
+        <td>
+          <a class="xref" href="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.html#Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_SkipUntil__1_Cysharp_Threading_Tasks_IUniTaskAsyncEnumerable___0__System_Func_CancellationToken_Cysharp_Threading_Tasks_UniTask__">SkipUntil&lt;TSource&gt;(IUniTaskAsyncEnumerable&lt;TSource&gt;, Func&lt;CancellationToken, UniTask&gt;)</a>
+        </td>
+        <td class="markdown level1 summary"></td>
+      </tr>
       <tr>
         <td>
           <a class="xref" href="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.html#Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_SkipUntilCanceled__1_Cysharp_Threading_Tasks_IUniTaskAsyncEnumerable___0__CancellationToken_">SkipUntilCanceled&lt;TSource&gt;(IUniTaskAsyncEnumerable&lt;TSource&gt;, CancellationToken)</a>
@@ -2420,6 +2432,18 @@
         </td>
         <td class="markdown level1 summary"></td>
       </tr>
+      <tr>
+        <td>
+          <a class="xref" href="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.html#Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_TakeUntil__1_Cysharp_Threading_Tasks_IUniTaskAsyncEnumerable___0__Cysharp_Threading_Tasks_UniTask_">TakeUntil&lt;TSource&gt;(IUniTaskAsyncEnumerable&lt;TSource&gt;, UniTask)</a>
+        </td>
+        <td class="markdown level1 summary"></td>
+      </tr>
+      <tr>
+        <td>
+          <a class="xref" href="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.html#Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_TakeUntil__1_Cysharp_Threading_Tasks_IUniTaskAsyncEnumerable___0__System_Func_CancellationToken_Cysharp_Threading_Tasks_UniTask__">TakeUntil&lt;TSource&gt;(IUniTaskAsyncEnumerable&lt;TSource&gt;, Func&lt;CancellationToken, UniTask&gt;)</a>
+        </td>
+        <td class="markdown level1 summary"></td>
+      </tr>
       <tr>
         <td>
           <a class="xref" href="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.html#Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_TakeUntilCanceled__1_Cysharp_Threading_Tasks_IUniTaskAsyncEnumerable___0__CancellationToken_">TakeUntilCanceled&lt;TSource&gt;(IUniTaskAsyncEnumerable&lt;TSource&gt;, CancellationToken)</a>
@@ -18559,6 +18583,98 @@ public static UniTask ForEachAsync&lt;T&gt;(this IUniTaskAsyncEnumerable&lt;T&gt
   
   
   
+  </section>
+  <section>
+  <a id="Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_SkipUntil_" data-uid="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.SkipUntil*"></a>
+  <h4 id="Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_SkipUntil__1_Cysharp_Threading_Tasks_IUniTaskAsyncEnumerable___0__Cysharp_Threading_Tasks_UniTask_" data-uid="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.SkipUntil``1(Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable{``0},Cysharp.Threading.Tasks.UniTask)">SkipUntil&lt;TSource&gt;(IUniTaskAsyncEnumerable&lt;TSource&gt;, UniTask)</h4>
+  <div class="markdown level1 summary"></div>
+  <div class="markdown level1 conceptual"></div>
+  
+  <div class="codewrapper">
+    <pre><code class="lang-csharp hljs">public static IUniTaskAsyncEnumerable&lt;TSource&gt; SkipUntil&lt;TSource&gt;(this IUniTaskAsyncEnumerable&lt;TSource&gt; source, UniTask other)</code></pre>
+  </div>
+
+  <section>
+  <h5 class="parameters">Parameters</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><span class="parametername"><code>source</code></span> <a class="xref" href="Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable-1.html">IUniTaskAsyncEnumerable</a>&lt;TSource&gt;</dt>
+    <dd></dd>
+    <dt><span class="parametername"><code>other</code></span> <a class="xref" href="Cysharp.Threading.Tasks.UniTask.html">UniTask</a></dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  <section>
+  <h5 class="returns">Returns</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><a class="xref" href="Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable-1.html">IUniTaskAsyncEnumerable</a>&lt;TSource&gt;</dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  <section>
+  <h5 class="typeParameters">Type Parameters</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><span class="parametername"><code>TSource</code></span></dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  
+  
+  
+  
+  
+  
+  
+  
+  
+  </section>
+  <section>
+  <a id="Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_SkipUntil_" data-uid="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.SkipUntil*"></a>
+  <h4 id="Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_SkipUntil__1_Cysharp_Threading_Tasks_IUniTaskAsyncEnumerable___0__System_Func_CancellationToken_Cysharp_Threading_Tasks_UniTask__" data-uid="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.SkipUntil``1(Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable{``0},System.Func{CancellationToken,Cysharp.Threading.Tasks.UniTask})">SkipUntil&lt;TSource&gt;(IUniTaskAsyncEnumerable&lt;TSource&gt;, Func&lt;CancellationToken, UniTask&gt;)</h4>
+  <div class="markdown level1 summary"></div>
+  <div class="markdown level1 conceptual"></div>
+  
+  <div class="codewrapper">
+    <pre><code class="lang-csharp hljs">public static IUniTaskAsyncEnumerable&lt;TSource&gt; SkipUntil&lt;TSource&gt;(this IUniTaskAsyncEnumerable&lt;TSource&gt; source, Func&lt;CancellationToken, UniTask&gt; other)</code></pre>
+  </div>
+
+  <section>
+  <h5 class="parameters">Parameters</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><span class="parametername"><code>source</code></span> <a class="xref" href="Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable-1.html">IUniTaskAsyncEnumerable</a>&lt;TSource&gt;</dt>
+    <dd></dd>
+    <dt><span class="parametername"><code>other</code></span> <span class="xref">System.Func</span>&lt;<span class="xref">CancellationToken</span>, <a class="xref" href="Cysharp.Threading.Tasks.UniTask.html">UniTask</a>&gt;</dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  <section>
+  <h5 class="returns">Returns</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><a class="xref" href="Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable-1.html">IUniTaskAsyncEnumerable</a>&lt;TSource&gt;</dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  <section>
+  <h5 class="typeParameters">Type Parameters</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><span class="parametername"><code>TSource</code></span></dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  
+  
+  
+  
+  
+  
+  
+  
+  
   </section>
   <section>
   <a id="Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_SkipUntilCanceled_" data-uid="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.SkipUntilCanceled*"></a>
@@ -21515,6 +21631,98 @@ public static UniTask ForEachAsync&lt;T&gt;(this IUniTaskAsyncEnumerable&lt;T&gt
   
   
   
+  </section>
+  <section>
+  <a id="Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_TakeUntil_" data-uid="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.TakeUntil*"></a>
+  <h4 id="Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_TakeUntil__1_Cysharp_Threading_Tasks_IUniTaskAsyncEnumerable___0__Cysharp_Threading_Tasks_UniTask_" data-uid="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.TakeUntil``1(Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable{``0},Cysharp.Threading.Tasks.UniTask)">TakeUntil&lt;TSource&gt;(IUniTaskAsyncEnumerable&lt;TSource&gt;, UniTask)</h4>
+  <div class="markdown level1 summary"></div>
+  <div class="markdown level1 conceptual"></div>
+  
+  <div class="codewrapper">
+    <pre><code class="lang-csharp hljs">public static IUniTaskAsyncEnumerable&lt;TSource&gt; TakeUntil&lt;TSource&gt;(this IUniTaskAsyncEnumerable&lt;TSource&gt; source, UniTask other)</code></pre>
+  </div>
+
+  <section>
+  <h5 class="parameters">Parameters</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><span class="parametername"><code>source</code></span> <a class="xref" href="Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable-1.html">IUniTaskAsyncEnumerable</a>&lt;TSource&gt;</dt>
+    <dd></dd>
+    <dt><span class="parametername"><code>other</code></span> <a class="xref" href="Cysharp.Threading.Tasks.UniTask.html">UniTask</a></dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  <section>
+  <h5 class="returns">Returns</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><a class="xref" href="Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable-1.html">IUniTaskAsyncEnumerable</a>&lt;TSource&gt;</dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  <section>
+  <h5 class="typeParameters">Type Parameters</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><span class="parametername"><code>TSource</code></span></dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  
+  
+  
+  
+  
+  
+  
+  
+  
+  </section>
+  <section>
+  <a id="Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_TakeUntil_" data-uid="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.TakeUntil*"></a>
+  <h4 id="Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_TakeUntil__1_Cysharp_Threading_Tasks_IUniTaskAsyncEnumerable___0__System_Func_CancellationToken_Cysharp_Threading_Tasks_UniTask__" data-uid="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.TakeUntil``1(Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable{``0},System.Func{CancellationToken,Cysharp.Threading.Tasks.UniTask})">TakeUntil&lt;TSource&gt;(IUniTaskAsyncEnumerable&lt;TSource&gt;, Func&lt;CancellationToken, UniTask&gt;)</h4>
+  <div class="markdown level1 summary"></div>
+  <div class="markdown level1 conceptual"></div>
+  
+  <div class="codewrapper">
+    <pre><code class="lang-csharp hljs">public static IUniTaskAsyncEnumerable&lt;TSource&gt; TakeUntil&lt;TSource&gt;(this IUniTaskAsyncEnumerable&lt;TSource&gt; source, Func&lt;CancellationToken, UniTask&gt; other)</code></pre>
+  </div>
+
+  <section>
+  <h5 class="parameters">Parameters</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><span class="parametername"><code>source</code></span> <a class="xref" href="Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable-1.html">IUniTaskAsyncEnumerable</a>&lt;TSource&gt;</dt>
+    <dd></dd>
+    <dt><span class="parametername"><code>other</code></span> <span class="xref">System.Func</span>&lt;<span class="xref">CancellationToken</span>, <a class="xref" href="Cysharp.Threading.Tasks.UniTask.html">UniTask</a>&gt;</dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  <section>
+  <h5 class="returns">Returns</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><a class="xref" href="Cysharp.Threading.Tasks.IUniTaskAsyncEnumerable-1.html">IUniTaskAsyncEnumerable</a>&lt;TSource&gt;</dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  <section>
+  <h5 class="typeParameters">Type Parameters</h5>
+  <dl class="cysharpdocfx-valuedefinition">
+    <dt><span class="parametername"><code>TSource</code></span></dt>
+    <dd></dd>
+  </dl>
+  </section>
+  
+  
+  
+  
+  
+  
+  
+  
+  
+  
   </section>
   <section>
   <a id="Cysharp_Threading_Tasks_Linq_UniTaskAsyncEnumerable_TakeUntilCanceled_" data-uid="Cysharp.Threading.Tasks.Linq.UniTaskAsyncEnumerable.TakeUntilCanceled*"></a>
diff --git a/api/Cysharp.Threading.Tasks.ReturnToSynchronizationContext.Awaiter.html b/api/Cysharp.Threading.Tasks.ReturnToSynchronizationContext.Awaiter.html
index 6b79843..87c3c04 100644
--- a/api/Cysharp.Threading.Tasks.ReturnToSynchronizationContext.Awaiter.html
+++ b/api/Cysharp.Threading.Tasks.ReturnToSynchronizationContext.Awaiter.html
@@ -110,7 +110,7 @@
     <tbody>
       <tr>
         <td>
-          <a class="xref" href="Cysharp.Threading.Tasks.ReturnToSynchronizationContext.Awaiter.html#Cysharp_Threading_Tasks_ReturnToSynchronizationContext_Awaiter__ctor_SynchronizationContext_System_Boolean_">Awaiter(SynchronizationContext, Boolean)</a>
+          <a class="xref" href="Cysharp.Threading.Tasks.ReturnToSynchronizationContext.Awaiter.html#Cysharp_Threading_Tasks_ReturnToSynchronizationContext_Awaiter__ctor_SynchronizationContext_System_Boolean_CancellationToken_">Awaiter(SynchronizationContext, Boolean, CancellationToken)</a>
         </td>
         <td class="markdown level1 summary"></td>
       </tr>
@@ -175,12 +175,12 @@
   </h3>
   <section>
   <a id="Cysharp_Threading_Tasks_ReturnToSynchronizationContext_Awaiter__ctor_" data-uid="Cysharp.Threading.Tasks.ReturnToSynchronizationContext.Awaiter.#ctor*"></a>
-  <h4 id="Cysharp_Threading_Tasks_ReturnToSynchronizationContext_Awaiter__ctor_SynchronizationContext_System_Boolean_" data-uid="Cysharp.Threading.Tasks.ReturnToSynchronizationContext.Awaiter.#ctor(SynchronizationContext,System.Boolean)">Awaiter(SynchronizationContext, Boolean)</h4>
+  <h4 id="Cysharp_Threading_Tasks_ReturnToSynchronizationContext_Awaiter__ctor_SynchronizationContext_System_Boolean_CancellationToken_" data-uid="Cysharp.Threading.Tasks.ReturnToSynchronizationContext.Awaiter.#ctor(SynchronizationContext,System.Boolean,CancellationToken)">Awaiter(SynchronizationContext, Boolean, CancellationToken)</h4>
   <div class="markdown level1 summary"></div>
   <div class="markdown level1 conceptual"></div>
   
   <div class="codewrapper">
-    <pre><code class="lang-csharp hljs">public Awaiter(SynchronizationContext synchronizationContext, bool dontPostWhenSameContext)</code></pre>
+    <pre><code class="lang-csharp hljs">public Awaiter(SynchronizationContext synchronizationContext, bool dontPostWhenSameContext, CancellationToken cancellationToken)</code></pre>
   </div>
 
   <section>
@@ -190,6 +190,8 @@
     <dd></dd>
     <dt><span class="parametername"><code>dontPostWhenSameContext</code></span> <span class="xref">System.Boolean</span></dt>
     <dd></dd>
+    <dt><span class="parametername"><code>cancellationToken</code></span> <span class="xref">CancellationToken</span></dt>
+    <dd></dd>
   </dl>
   </section>
   
diff --git a/api/Cysharp.Threading.Tasks.ReturnToSynchronizationContext.html b/api/Cysharp.Threading.Tasks.ReturnToSynchronizationContext.html
index acb24a5..870a23c 100644
--- a/api/Cysharp.Threading.Tasks.ReturnToSynchronizationContext.html
+++ b/api/Cysharp.Threading.Tasks.ReturnToSynchronizationContext.html
@@ -105,7 +105,7 @@
     <tbody>
       <tr>
         <td>
-          <a class="xref" href="Cysharp.Threading.Tasks.ReturnToSynchronizationContext.html#Cysharp_Threading_Tasks_ReturnToSynchronizationContext__ctor_SynchronizationContext_System_Boolean_">ReturnToSynchronizationContext(SynchronizationContext, Boolean)</a>
+          <a class="xref" href="Cysharp.Threading.Tasks.ReturnToSynchronizationContext.html#Cysharp_Threading_Tasks_ReturnToSynchronizationContext__ctor_SynchronizationContext_System_Boolean_CancellationToken_">ReturnToSynchronizationContext(SynchronizationContext, Boolean, CancellationToken)</a>
         </td>
         <td class="markdown level1 summary"></td>
       </tr>
@@ -134,12 +134,12 @@
   </h3>
   <section>
   <a id="Cysharp_Threading_Tasks_ReturnToSynchronizationContext__ctor_" data-uid="Cysharp.Threading.Tasks.ReturnToSynchronizationContext.#ctor*"></a>
-  <h4 id="Cysharp_Threading_Tasks_ReturnToSynchronizationContext__ctor_SynchronizationContext_System_Boolean_" data-uid="Cysharp.Threading.Tasks.ReturnToSynchronizationContext.#ctor(SynchronizationContext,System.Boolean)">ReturnToSynchronizationContext(SynchronizationContext, Boolean)</h4>
+  <h4 id="Cysharp_Threading_Tasks_ReturnToSynchronizationContext__ctor_SynchronizationContext_System_Boolean_CancellationToken_" data-uid="Cysharp.Threading.Tasks.ReturnToSynchronizationContext.#ctor(SynchronizationContext,System.Boolean,CancellationToken)">ReturnToSynchronizationContext(SynchronizationContext, Boolean, CancellationToken)</h4>
   <div class="markdown level1 summary"></div>
   <div class="markdown level1 conceptual"></div>
   
   <div class="codewrapper">
-    <pre><code class="lang-csharp hljs">public ReturnToSynchronizationContext(SynchronizationContext syncContext, bool dontPostWhenSameContext)</code></pre>
+    <pre><code class="lang-csharp hljs">public ReturnToSynchronizationContext(SynchronizationContext syncContext, bool dontPostWhenSameContext, CancellationToken cancellationToken)</code></pre>
   </div>
 
   <section>
@@ -149,6 +149,8 @@
     <dd></dd>
     <dt><span class="parametername"><code>dontPostWhenSameContext</code></span> <span class="xref">System.Boolean</span></dt>
     <dd></dd>
+    <dt><span class="parametername"><code>cancellationToken</code></span> <span class="xref">CancellationToken</span></dt>
+    <dd></dd>
   </dl>
   </section>
   
diff --git a/api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.html b/api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.html
index c6478b4..cf5e9b8 100644
--- a/api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.html
+++ b/api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.html
@@ -110,7 +110,7 @@
     <tbody>
       <tr>
         <td>
-          <a class="xref" href="Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.html#Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable_Awaiter__ctor_SynchronizationContext_">Awaiter(SynchronizationContext)</a>
+          <a class="xref" href="Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.html#Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable_Awaiter__ctor_SynchronizationContext_CancellationToken_">Awaiter(SynchronizationContext, CancellationToken)</a>
         </td>
         <td class="markdown level1 summary"></td>
       </tr>
@@ -169,12 +169,12 @@
   </h3>
   <section>
   <a id="Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable_Awaiter__ctor_" data-uid="Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.#ctor*"></a>
-  <h4 id="Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable_Awaiter__ctor_SynchronizationContext_" data-uid="Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.#ctor(SynchronizationContext)">Awaiter(SynchronizationContext)</h4>
+  <h4 id="Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable_Awaiter__ctor_SynchronizationContext_CancellationToken_" data-uid="Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.#ctor(SynchronizationContext,CancellationToken)">Awaiter(SynchronizationContext, CancellationToken)</h4>
   <div class="markdown level1 summary"></div>
   <div class="markdown level1 conceptual"></div>
   
   <div class="codewrapper">
-    <pre><code class="lang-csharp hljs">public Awaiter(SynchronizationContext synchronizationContext)</code></pre>
+    <pre><code class="lang-csharp hljs">public Awaiter(SynchronizationContext synchronizationContext, CancellationToken cancellationToken)</code></pre>
   </div>
 
   <section>
@@ -182,6 +182,8 @@
   <dl class="cysharpdocfx-valuedefinition">
     <dt><span class="parametername"><code>synchronizationContext</code></span> <span class="xref">SynchronizationContext</span></dt>
     <dd></dd>
+    <dt><span class="parametername"><code>cancellationToken</code></span> <span class="xref">CancellationToken</span></dt>
+    <dd></dd>
   </dl>
   </section>
   
diff --git a/api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.html b/api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.html
index f89218f..d0b4e1a 100644
--- a/api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.html
+++ b/api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.html
@@ -105,7 +105,7 @@
     <tbody>
       <tr>
         <td>
-          <a class="xref" href="Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.html#Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable__ctor_SynchronizationContext_">SwitchToSynchronizationContextAwaitable(SynchronizationContext)</a>
+          <a class="xref" href="Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.html#Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable__ctor_SynchronizationContext_CancellationToken_">SwitchToSynchronizationContextAwaitable(SynchronizationContext, CancellationToken)</a>
         </td>
         <td class="markdown level1 summary"></td>
       </tr>
@@ -134,12 +134,12 @@
   </h3>
   <section>
   <a id="Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable__ctor_" data-uid="Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.#ctor*"></a>
-  <h4 id="Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable__ctor_SynchronizationContext_" data-uid="Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.#ctor(SynchronizationContext)">SwitchToSynchronizationContextAwaitable(SynchronizationContext)</h4>
+  <h4 id="Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable__ctor_SynchronizationContext_CancellationToken_" data-uid="Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.#ctor(SynchronizationContext,CancellationToken)">SwitchToSynchronizationContextAwaitable(SynchronizationContext, CancellationToken)</h4>
   <div class="markdown level1 summary"></div>
   <div class="markdown level1 conceptual"></div>
   
   <div class="codewrapper">
-    <pre><code class="lang-csharp hljs">public SwitchToSynchronizationContextAwaitable(SynchronizationContext synchronizationContext)</code></pre>
+    <pre><code class="lang-csharp hljs">public SwitchToSynchronizationContextAwaitable(SynchronizationContext synchronizationContext, CancellationToken cancellationToken)</code></pre>
   </div>
 
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     <dt><span class="parametername"><code>synchronizationContext</code></span> <span class="xref">SynchronizationContext</span></dt>
     <dd></dd>
+    <dt><span class="parametername"><code>cancellationToken</code></span> <span class="xref">CancellationToken</span></dt>
+    <dd></dd>
   </dl>
   </section>
   
diff --git a/api/Cysharp.Threading.Tasks.UniTask.html b/api/Cysharp.Threading.Tasks.UniTask.html
index b33113f..8df3289 100644
--- a/api/Cysharp.Threading.Tasks.UniTask.html
+++ b/api/Cysharp.Threading.Tasks.UniTask.html
@@ -299,13 +299,13 @@ For example: FooAction = UniTask.Action(async () =&gt; { /* */ })</p>
       </tr>
       <tr>
         <td>
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+          <a class="xref" href="Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_ReturnToCurrentSynchronizationContext_System_Boolean_CancellationToken_">ReturnToCurrentSynchronizationContext(Boolean, CancellationToken)</a>
         </td>
         <td class="markdown level1 summary"></td>
       </tr>
       <tr>
         <td>
-          <a class="xref" href="Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_ReturnToSynchronizationContext_SynchronizationContext_">ReturnToSynchronizationContext(SynchronizationContext)</a>
+          <a class="xref" href="Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_ReturnToSynchronizationContext_SynchronizationContext_CancellationToken_">ReturnToSynchronizationContext(SynchronizationContext, CancellationToken)</a>
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@@ -374,7 +374,7 @@ For example: FooAction = UniTask.Action(async () =&gt; { /* */ })</p>
       </tr>
       <tr>
         <td>
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+          <a class="xref" href="Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_SwitchToSynchronizationContext_SynchronizationContext_CancellationToken_">SwitchToSynchronizationContext(SynchronizationContext, CancellationToken)</a>
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         <td class="markdown level1 summary"></td>
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@@ -1708,12 +1708,12 @@ For example: FooAction = UniTask.Action(async () =&gt; { /* */ })</p>
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   <a id="Cysharp_Threading_Tasks_UniTask_ReturnToCurrentSynchronizationContext_" data-uid="Cysharp.Threading.Tasks.UniTask.ReturnToCurrentSynchronizationContext*"></a>
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+  <h4 id="Cysharp_Threading_Tasks_UniTask_ReturnToCurrentSynchronizationContext_System_Boolean_CancellationToken_" data-uid="Cysharp.Threading.Tasks.UniTask.ReturnToCurrentSynchronizationContext(System.Boolean,CancellationToken)">ReturnToCurrentSynchronizationContext(Boolean, CancellationToken)</h4>
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   <div class="markdown level1 conceptual"></div>
   
   <div class="codewrapper">
-    <pre><code class="lang-csharp hljs">public static ReturnToSynchronizationContext ReturnToCurrentSynchronizationContext(bool dontPostWhenSameContext = true)</code></pre>
+    <pre><code class="lang-csharp hljs">public static ReturnToSynchronizationContext ReturnToCurrentSynchronizationContext(bool dontPostWhenSameContext = true, CancellationToken cancellationToken = null)</code></pre>
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   <section>
@@ -1721,6 +1721,8 @@ For example: FooAction = UniTask.Action(async () =&gt; { /* */ })</p>
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     <dt><span class="parametername"><code>dontPostWhenSameContext</code></span> <span class="xref">System.Boolean</span></dt>
     <dd></dd>
+    <dt><span class="parametername"><code>cancellationToken</code></span> <span class="xref">CancellationToken</span></dt>
+    <dd></dd>
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@@ -1745,12 +1747,12 @@ For example: FooAction = UniTask.Action(async () =&gt; { /* */ })</p>
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   <div class="markdown level1 summary"></div>
   <div class="markdown level1 conceptual"></div>
   
   <div class="codewrapper">
-    <pre><code class="lang-csharp hljs">public static ReturnToSynchronizationContext ReturnToSynchronizationContext(SynchronizationContext synchronizationContext)</code></pre>
+    <pre><code class="lang-csharp hljs">public static ReturnToSynchronizationContext ReturnToSynchronizationContext(SynchronizationContext synchronizationContext, CancellationToken cancellationToken = null)</code></pre>
   </div>
 
   <section>
@@ -1758,6 +1760,8 @@ For example: FooAction = UniTask.Action(async () =&gt; { /* */ })</p>
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     <dt><span class="parametername"><code>synchronizationContext</code></span> <span class="xref">SynchronizationContext</span></dt>
     <dd></dd>
+    <dt><span class="parametername"><code>cancellationToken</code></span> <span class="xref">CancellationToken</span></dt>
+    <dd></dd>
   </dl>
   </section>
   
@@ -2169,12 +2173,12 @@ For example: FooAction = UniTask.Action(async () =&gt; { /* */ })</p>
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   <section>
   <a id="Cysharp_Threading_Tasks_UniTask_SwitchToSynchronizationContext_" data-uid="Cysharp.Threading.Tasks.UniTask.SwitchToSynchronizationContext*"></a>
-  <h4 id="Cysharp_Threading_Tasks_UniTask_SwitchToSynchronizationContext_SynchronizationContext_" data-uid="Cysharp.Threading.Tasks.UniTask.SwitchToSynchronizationContext(SynchronizationContext)">SwitchToSynchronizationContext(SynchronizationContext)</h4>
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   <div class="markdown level1 summary"></div>
   <div class="markdown level1 conceptual"></div>
   
   <div class="codewrapper">
-    <pre><code class="lang-csharp hljs">public static SwitchToSynchronizationContextAwaitable SwitchToSynchronizationContext(SynchronizationContext synchronizationContext)</code></pre>
+    <pre><code class="lang-csharp hljs">public static SwitchToSynchronizationContextAwaitable SwitchToSynchronizationContext(SynchronizationContext synchronizationContext, CancellationToken cancellationToken = null)</code></pre>
   </div>
 
   <section>
@@ -2182,6 +2186,8 @@ For example: FooAction = UniTask.Action(async () =&gt; { /* */ })</p>
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     <dt><span class="parametername"><code>synchronizationContext</code></span> <span class="xref">SynchronizationContext</span></dt>
     <dd></dd>
+    <dt><span class="parametername"><code>cancellationToken</code></span> <span class="xref">CancellationToken</span></dt>
+    <dd></dd>
   </dl>
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index d2b6029..0b19413 100644
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@@ -765,7 +765,7 @@
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index 96c8ee2..182720d 100644
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-  nameWithType: SwitchToSynchronizationContextAwaitable.SwitchToSynchronizationContextAwaitable(SynchronizationContext)
+- uid: Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.#ctor(SynchronizationContext,CancellationToken)
+  name: SwitchToSynchronizationContextAwaitable(SynchronizationContext, CancellationToken)
+  href: api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.html#Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable__ctor_SynchronizationContext_CancellationToken_
+  commentId: M:Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.#ctor(SynchronizationContext,CancellationToken)
+  fullName: Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.SwitchToSynchronizationContextAwaitable(SynchronizationContext, CancellationToken)
+  nameWithType: SwitchToSynchronizationContextAwaitable.SwitchToSynchronizationContextAwaitable(SynchronizationContext, CancellationToken)
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   name: SwitchToSynchronizationContextAwaitable
   href: api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.html#Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable__ctor_
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   fullName: Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter
   nameWithType: SwitchToSynchronizationContextAwaitable.Awaiter
-- uid: Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.#ctor(SynchronizationContext)
-  name: Awaiter(SynchronizationContext)
-  href: api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.html#Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable_Awaiter__ctor_SynchronizationContext_
-  commentId: M:Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.#ctor(SynchronizationContext)
-  fullName: Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.Awaiter(SynchronizationContext)
-  nameWithType: SwitchToSynchronizationContextAwaitable.Awaiter.Awaiter(SynchronizationContext)
+- uid: Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.#ctor(SynchronizationContext,CancellationToken)
+  name: Awaiter(SynchronizationContext, CancellationToken)
+  href: api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.html#Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable_Awaiter__ctor_SynchronizationContext_CancellationToken_
+  commentId: M:Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.#ctor(SynchronizationContext,CancellationToken)
+  fullName: Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.Awaiter(SynchronizationContext, CancellationToken)
+  nameWithType: SwitchToSynchronizationContextAwaitable.Awaiter.Awaiter(SynchronizationContext, CancellationToken)
 - uid: Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.#ctor*
   name: Awaiter
   href: api/Cysharp.Threading.Tasks.SwitchToSynchronizationContextAwaitable.Awaiter.html#Cysharp_Threading_Tasks_SwitchToSynchronizationContextAwaitable_Awaiter__ctor_
@@ -17758,12 +17808,12 @@ references:
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   nameWithType: UniTask.Preserve
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-  name: ReturnToCurrentSynchronizationContext(Boolean)
-  href: api/Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_ReturnToCurrentSynchronizationContext_System_Boolean_
-  commentId: M:Cysharp.Threading.Tasks.UniTask.ReturnToCurrentSynchronizationContext(System.Boolean)
-  fullName: Cysharp.Threading.Tasks.UniTask.ReturnToCurrentSynchronizationContext(System.Boolean)
-  nameWithType: UniTask.ReturnToCurrentSynchronizationContext(Boolean)
+- uid: Cysharp.Threading.Tasks.UniTask.ReturnToCurrentSynchronizationContext(System.Boolean,CancellationToken)
+  name: ReturnToCurrentSynchronizationContext(Boolean, CancellationToken)
+  href: api/Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_ReturnToCurrentSynchronizationContext_System_Boolean_CancellationToken_
+  commentId: M:Cysharp.Threading.Tasks.UniTask.ReturnToCurrentSynchronizationContext(System.Boolean,CancellationToken)
+  fullName: Cysharp.Threading.Tasks.UniTask.ReturnToCurrentSynchronizationContext(System.Boolean, CancellationToken)
+  nameWithType: UniTask.ReturnToCurrentSynchronizationContext(Boolean, CancellationToken)
 - uid: Cysharp.Threading.Tasks.UniTask.ReturnToCurrentSynchronizationContext*
   name: ReturnToCurrentSynchronizationContext
   href: api/Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_ReturnToCurrentSynchronizationContext_
@@ -17771,12 +17821,12 @@ references:
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   nameWithType: UniTask.ReturnToCurrentSynchronizationContext
-- uid: Cysharp.Threading.Tasks.UniTask.ReturnToSynchronizationContext(SynchronizationContext)
-  name: ReturnToSynchronizationContext(SynchronizationContext)
-  href: api/Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_ReturnToSynchronizationContext_SynchronizationContext_
-  commentId: M:Cysharp.Threading.Tasks.UniTask.ReturnToSynchronizationContext(SynchronizationContext)
-  fullName: Cysharp.Threading.Tasks.UniTask.ReturnToSynchronizationContext(SynchronizationContext)
-  nameWithType: UniTask.ReturnToSynchronizationContext(SynchronizationContext)
+- uid: Cysharp.Threading.Tasks.UniTask.ReturnToSynchronizationContext(SynchronizationContext,CancellationToken)
+  name: ReturnToSynchronizationContext(SynchronizationContext, CancellationToken)
+  href: api/Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_ReturnToSynchronizationContext_SynchronizationContext_CancellationToken_
+  commentId: M:Cysharp.Threading.Tasks.UniTask.ReturnToSynchronizationContext(SynchronizationContext,CancellationToken)
+  fullName: Cysharp.Threading.Tasks.UniTask.ReturnToSynchronizationContext(SynchronizationContext, CancellationToken)
+  nameWithType: UniTask.ReturnToSynchronizationContext(SynchronizationContext, CancellationToken)
 - uid: Cysharp.Threading.Tasks.UniTask.ReturnToSynchronizationContext*
   name: ReturnToSynchronizationContext
   href: api/Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_ReturnToSynchronizationContext_
@@ -17886,12 +17936,12 @@ references:
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   nameWithType: UniTask.SuppressCancellationThrow
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-  name: SwitchToSynchronizationContext(SynchronizationContext)
-  href: api/Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_SwitchToSynchronizationContext_SynchronizationContext_
-  commentId: M:Cysharp.Threading.Tasks.UniTask.SwitchToSynchronizationContext(SynchronizationContext)
-  fullName: Cysharp.Threading.Tasks.UniTask.SwitchToSynchronizationContext(SynchronizationContext)
-  nameWithType: UniTask.SwitchToSynchronizationContext(SynchronizationContext)
+- uid: Cysharp.Threading.Tasks.UniTask.SwitchToSynchronizationContext(SynchronizationContext,CancellationToken)
+  name: SwitchToSynchronizationContext(SynchronizationContext, CancellationToken)
+  href: api/Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_SwitchToSynchronizationContext_SynchronizationContext_CancellationToken_
+  commentId: M:Cysharp.Threading.Tasks.UniTask.SwitchToSynchronizationContext(SynchronizationContext,CancellationToken)
+  fullName: Cysharp.Threading.Tasks.UniTask.SwitchToSynchronizationContext(SynchronizationContext, CancellationToken)
+  nameWithType: UniTask.SwitchToSynchronizationContext(SynchronizationContext, CancellationToken)
 - uid: Cysharp.Threading.Tasks.UniTask.SwitchToSynchronizationContext*
   name: SwitchToSynchronizationContext
   href: api/Cysharp.Threading.Tasks.UniTask.html#Cysharp_Threading_Tasks_UniTask_SwitchToSynchronizationContext_