diff --git a/common.gypi b/common.gypi
index 77ffb7e4867..67aa8e7200a 100644
--- a/common.gypi
+++ b/common.gypi
@@ -36,7 +36,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.20',
+    'v8_embedder_string': '-node.21',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/include/v8.h b/deps/v8/include/v8.h
index 7999f358ab5..f51fad14d9e 100644
--- a/deps/v8/include/v8.h
+++ b/deps/v8/include/v8.h
@@ -10417,9 +10417,12 @@ class V8_EXPORT Context {
    */
   void Exit();
 
-  /** Returns an isolate associated with a current context. */
+  /** Returns the isolate associated with a current context. */
   Isolate* GetIsolate();
 
+  /** Returns the microtask queue associated with a current context. */
+  MicrotaskQueue* GetMicrotaskQueue();
+
   /**
    * The field at kDebugIdIndex used to be reserved for the inspector.
    * It now serves no purpose.
diff --git a/deps/v8/src/api/api.cc b/deps/v8/src/api/api.cc
index c27db3e7b87..11a9dce9f06 100644
--- a/deps/v8/src/api/api.cc
+++ b/deps/v8/src/api/api.cc
@@ -6118,6 +6118,12 @@ v8::Isolate* Context::GetIsolate() {
   return reinterpret_cast<Isolate*>(env->GetIsolate());
 }
 
+v8::MicrotaskQueue* Context::GetMicrotaskQueue() {
+  i::Handle<i::Context> env = Utils::OpenHandle(this);
+  CHECK(env->IsNativeContext());
+  return i::Handle<i::NativeContext>::cast(env)->microtask_queue();
+}
+
 v8::Local<v8::Object> Context::Global() {
   i::Handle<i::Context> context = Utils::OpenHandle(this);
   i::Isolate* isolate = context->GetIsolate();
diff --git a/deps/v8/test/cctest/test-api.cc b/deps/v8/test/cctest/test-api.cc
index cd291aa524a..299614c1223 100644
--- a/deps/v8/test/cctest/test-api.cc
+++ b/deps/v8/test/cctest/test-api.cc
@@ -28348,3 +28348,13 @@ TEST(TriggerThreadSafeMetricsEvent) {
   CHECK_EQ(recorder->count_, 1);  // Increased.
   CHECK_EQ(recorder->module_count_, 42);
 }
+
+THREADED_TEST(MicrotaskQueueOfContext) {
+  auto microtask_queue = v8::MicrotaskQueue::New(CcTest::isolate());
+  v8::HandleScope scope(CcTest::isolate());
+  v8::Local<Context> context = Context::New(
+      CcTest::isolate(), nullptr, v8::MaybeLocal<ObjectTemplate>(),
+      v8::MaybeLocal<Value>(), v8::DeserializeInternalFieldsCallback(),
+      microtask_queue.get());
+  CHECK_EQ(context->GetMicrotaskQueue(), microtask_queue.get());
+}