diff --git a/package-lock.json b/package-lock.json
index 3bd3e17..5b3ab17 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -202,7 +202,7 @@
       "integrity": "sha1-uDx1fIAOaOHW78GjoaE/85/23NI=",
       "dev": true,
       "requires": {
-        "jasmine-node": "git+https://github.com/kevinsawicki/jasmine-node.git#81af4f953a2b7dfb5bde8331c05362a4b464c5ef",
+        "jasmine-node": "jasmine-node@git+https://github.com/kevinsawicki/jasmine-node.git#81af4f953a2b7dfb5bde8331c05362a4b464c5ef",
         "underscore-plus": "1.x",
         "walkdir": "0.0.7"
       }
diff --git a/src/main.cc b/src/main.cc
index 0318ac5..b834148 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -134,9 +134,15 @@ class Spellchecker : public Nan::ObjectWrap {
       uint32_t start = iter->start, end = iter->end;
 
       Local<Object> misspelled_range = Nan::New<Object>();
-      misspelled_range->Set(Nan::New("start").ToLocalChecked(), Nan::New<Integer>(start));
-      misspelled_range->Set(Nan::New("end").ToLocalChecked(), Nan::New<Integer>(end));
-      result->Set(index, misspelled_range);
+      {
+        Isolate* isolate = misspelled_range->GetIsolate();
+        Local<Context> context = isolate->GetCurrentContext();
+        misspelled_range->Set(context, Nan::New("start").ToLocalChecked(), Nan::New<Integer>(start)).Check();
+        misspelled_range->Set(context, Nan::New("end").ToLocalChecked(), Nan::New<Integer>(end)).Check();
+      }
+      Isolate* isolate = result->GetIsolate();
+      Local<Context> context = isolate->GetCurrentContext();
+      result->Set(context, index, misspelled_range).Check();
     }
   }
 
@@ -220,7 +226,9 @@ class Spellchecker : public Nan::ObjectWrap {
     Local<Array> result = Nan::New<Array>(dictionaries.size());
     for (size_t i = 0; i < dictionaries.size(); ++i) {
       const std::string& dict = dictionaries[i];
-      result->Set(i, Nan::New(dict.data(), dict.size()).ToLocalChecked());
+      Isolate* isolate = result->GetIsolate();
+      Local<Context> context = isolate->GetCurrentContext();
+      result->Set(context, i, Nan::New(dict.data(), dict.size()).ToLocalChecked()).Check();
     }
 
     info.GetReturnValue().Set(result);
@@ -246,7 +254,9 @@ class Spellchecker : public Nan::ObjectWrap {
       const std::string& word = corrections[i];
 
       Nan::MaybeLocal<String> val = Nan::New<String>(word.data(), word.size());
-      result->Set(i, val.ToLocalChecked());
+      Isolate* isolate = result->GetIsolate();
+      Local<Context> context = isolate->GetCurrentContext();
+      result->Set(context, i, val.ToLocalChecked()).Check();
     }
 
     info.GetReturnValue().Set(result);
@@ -286,7 +296,7 @@ class Spellchecker : public Nan::ObjectWrap {
 
     Isolate* isolate = exports->GetIsolate();
     Local<Context> context = isolate->GetCurrentContext();
-    exports->Set(Nan::New("Spellchecker").ToLocalChecked(), tpl->GetFunction(context).ToLocalChecked());
+    exports->Set(context, Nan::New("Spellchecker").ToLocalChecked(), tpl->GetFunction(context).ToLocalChecked()).Check();
   }
 };
 
diff --git a/src/worker.cc b/src/worker.cc
index fbae5ec..0314e91 100644
--- a/src/worker.cc
+++ b/src/worker.cc
@@ -35,9 +35,15 @@ void CheckSpellingWorker::HandleOKCallback() {
     uint32_t start = iter->start, end = iter->end;
 
     Local<Object> misspelled_range = Nan::New<Object>();
-    misspelled_range->Set(Nan::New("start").ToLocalChecked(), Nan::New<Integer>(start));
-    misspelled_range->Set(Nan::New("end").ToLocalChecked(), Nan::New<Integer>(end));
-    result->Set(index, misspelled_range);
+    {
+      Isolate* isolate = misspelled_range->GetIsolate();
+      Local<Context> context = isolate->GetCurrentContext();
+      misspelled_range->Set(context, Nan::New("start").ToLocalChecked(), Nan::New<Integer>(start)).Check();
+      misspelled_range->Set(context, Nan::New("end").ToLocalChecked(), Nan::New<Integer>(end)).Check();
+    }
+    Isolate* isolate = result->GetIsolate();
+    Local<Context> context = isolate->GetCurrentContext();
+    result->Set(context, index, misspelled_range).Check();
   }
 
   Local<Value> argv[] = { Nan::Null(), result };