diff --git a/common.gypi b/common.gypi
index e6b189f957debb..211b418f98a38b 100644
--- a/common.gypi
+++ b/common.gypi
@@ -39,7 +39,7 @@
 
     # 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.17',
+    'v8_embedder_string': '-node.18',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/src/api/api.cc b/deps/v8/src/api/api.cc
index aa61346d63e33b..8be7f8558c8dde 100644
--- a/deps/v8/src/api/api.cc
+++ b/deps/v8/src/api/api.cc
@@ -1314,6 +1314,7 @@ void Context::SetEmbedderData(int index, v8::Local<Value> value) {
 
 void* Context::SlowGetAlignedPointerFromEmbedderData(int index) {
   const char* location = "v8::Context::GetAlignedPointerFromEmbedderData()";
+  HandleScope handle_scope(GetIsolate());
   i::Handle<i::EmbedderDataArray> data =
       EmbedderDataFor(this, index, false, location);
   if (data.is_null()) return nullptr;
diff --git a/deps/v8/test/cctest/test-api.cc b/deps/v8/test/cctest/test-api.cc
index ae3cf3e8750383..345ee0bfc9de97 100644
--- a/deps/v8/test/cctest/test-api.cc
+++ b/deps/v8/test/cctest/test-api.cc
@@ -2955,8 +2955,11 @@ THREADED_TEST(SetAlignedPointerInInternalFields) {
 
   obj->SetAlignedPointerInInternalFields(2, indices, values);
   CcTest::CollectAllGarbage();
-  CHECK_EQ(heap_allocated_1, obj->GetAlignedPointerFromInternalField(0));
-  CHECK_EQ(heap_allocated_2, obj->GetAlignedPointerFromInternalField(1));
+  {
+    v8::SealHandleScope no_handle_leak(isolate);
+    CHECK_EQ(heap_allocated_1, obj->GetAlignedPointerFromInternalField(0));
+    CHECK_EQ(heap_allocated_2, obj->GetAlignedPointerFromInternalField(1));
+  }
 
   indices[0] = 1;
   indices[1] = 0;
@@ -3009,6 +3012,7 @@ THREADED_TEST(EmbedderDataAlignedPointers) {
   }
   CcTest::CollectAllGarbage();
   for (int i = 0; i < 100; i++) {
+    v8::SealHandleScope no_handle_leak(env->GetIsolate());
     CHECK_EQ(AlignedTestPointer(i), env->GetAlignedPointerFromEmbedderData(i));
   }
 }