diff --git a/deps/v8/include/v8.h b/deps/v8/include/v8.h
index e1951ec270597d..325d3b0988314c 100644
--- a/deps/v8/include/v8.h
+++ b/deps/v8/include/v8.h
@@ -7717,6 +7717,9 @@ class V8_EXPORT Isolate {
    */
   void SetIdle(bool is_idle);
 
+  /** Returns the ArrayBuffer::Allocator used in this isolate. */
+  ArrayBuffer::Allocator* GetArrayBufferAllocator();
+
   /** Returns true if this isolate has a current context. */
   bool InContext();
 
diff --git a/deps/v8/src/api.cc b/deps/v8/src/api.cc
index 8163b9061f3813..3f0cad545f5cee 100644
--- a/deps/v8/src/api.cc
+++ b/deps/v8/src/api.cc
@@ -8084,6 +8084,11 @@ void Isolate::SetIdle(bool is_idle) {
   isolate->SetIdle(is_idle);
 }
 
+ArrayBuffer::Allocator* Isolate::GetArrayBufferAllocator() {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  return isolate->array_buffer_allocator();
+}
+
 bool Isolate::InContext() {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   return isolate->context() != nullptr;
diff --git a/deps/v8/test/cctest/test-api.cc b/deps/v8/test/cctest/test-api.cc
index ae8b133b2dd5de..7aa54a00f838a6 100644
--- a/deps/v8/test/cctest/test-api.cc
+++ b/deps/v8/test/cctest/test-api.cc
@@ -20773,6 +20773,7 @@ TEST(IsolateNewDispose) {
   CHECK_NOT_NULL(isolate);
   CHECK(current_isolate != isolate);
   CHECK(current_isolate == CcTest::isolate());
+  CHECK(isolate->GetArrayBufferAllocator() == CcTest::array_buffer_allocator());
 
   isolate->SetFatalErrorHandler(StoringErrorCallback);
   last_location = last_message = nullptr;