diff --git a/src/async_wrap.cc b/src/async_wrap.cc
index 52601ffc8f0c15..16fcd2abb2fbde 100644
--- a/src/async_wrap.cc
+++ b/src/async_wrap.cc
@@ -693,6 +693,8 @@ MaybeLocal<Value> AsyncWrap::MakeCallback(const Local<Function> cb,
 
 
 async_id AsyncHooksGetExecutionAsyncId(Isolate* isolate) {
+  // Environment::GetCurrent() allocates a Local<> handle.
+  v8::HandleScope handle_scope(isolate);
   Environment* env = Environment::GetCurrent(isolate);
   if (env == nullptr) return -1;
   return env->execution_async_id();
@@ -700,6 +702,8 @@ async_id AsyncHooksGetExecutionAsyncId(Isolate* isolate) {
 
 
 async_id AsyncHooksGetTriggerAsyncId(Isolate* isolate) {
+  // Environment::GetCurrent() allocates a Local<> handle.
+  v8::HandleScope handle_scope(isolate);
   Environment* env = Environment::GetCurrent(isolate);
   if (env == nullptr) return -1;
   return env->trigger_async_id();
@@ -710,6 +714,7 @@ async_context EmitAsyncInit(Isolate* isolate,
                             Local<Object> resource,
                             const char* name,
                             async_id trigger_async_id) {
+  v8::HandleScope handle_scope(isolate);
   Local<String> type =
       String::NewFromUtf8(isolate, name, v8::NewStringType::kInternalized)
           .ToLocalChecked();
@@ -720,6 +725,7 @@ async_context EmitAsyncInit(Isolate* isolate,
                             Local<Object> resource,
                             v8::Local<v8::String> name,
                             async_id trigger_async_id) {
+  v8::HandleScope handle_scope(isolate);
   Environment* env = Environment::GetCurrent(isolate);
   CHECK_NOT_NULL(env);
 
@@ -740,6 +746,8 @@ async_context EmitAsyncInit(Isolate* isolate,
 }
 
 void EmitAsyncDestroy(Isolate* isolate, async_context asyncContext) {
+  // Environment::GetCurrent() allocates a Local<> handle.
+  v8::HandleScope handle_scope(isolate);
   AsyncWrap::EmitDestroy(
       Environment::GetCurrent(isolate), asyncContext.async_id);
 }
diff --git a/test/addons/async-hello-world/binding.cc b/test/addons/async-hello-world/binding.cc
index 3a584a88a07bc9..66232bc101577a 100644
--- a/test/addons/async-hello-world/binding.cc
+++ b/test/addons/async-hello-world/binding.cc
@@ -56,6 +56,8 @@ void AfterAsync(uv_work_t* r) {
     callback->Call(global, 2, argv);
   }
 
+  // None of the following operations should allocate handles into this scope.
+  v8::SealHandleScope seal_handle_scope(isolate);
   // cleanup
   node::EmitAsyncDestroy(isolate, req->context);
   req->callback.Reset();