diff --git a/.travis.yml b/.travis.yml
index c45c402..cb4c789 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,13 +12,11 @@ language: node_js
 node_js:
   - "stable"
   - "4.0"
-  - "0.12"
-  - "0.10"
 
 install:
   - export CXX=g++-4.8
   - $CXX --version
-  - npm i 
+  - npm i
 
 before_install:
   - npm install -g node-gyp
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..309e58c
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,13 @@
+{
+  "name": "x509",
+  "version": "0.3.4",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "nan": {
+      "version": "2.14.0",
+      "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.0.tgz",
+      "integrity": "sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg=="
+    }
+  }
+}
diff --git a/package.json b/package.json
index cc6ee44..343ea01 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,6 @@
   },
   "license": "MIT",
   "dependencies": {
-    "nan": "2.12.0"
+    "nan": "2.14.0"
   }
 }
diff --git a/src/addon.cc b/src/addon.cc
index f0aab0c..a9da123 100644
--- a/src/addon.cc
+++ b/src/addon.cc
@@ -13,20 +13,20 @@ void init(Local<Object> exports) {
 
   Nan::Set(exports,
     Nan::New<String>("verify").ToLocalChecked(),
-    Nan::New<FunctionTemplate>(verify)->GetFunction());
+    Nan::New<FunctionTemplate>(verify)->GetFunction(Nan::GetCurrentContext()).ToLocalChecked());
 
   Nan::Set(exports,
     Nan::New<String>("getAltNames").ToLocalChecked(),
-    Nan::New<FunctionTemplate>(get_altnames)->GetFunction());
+    Nan::New<FunctionTemplate>(get_altnames)->GetFunction(Nan::GetCurrentContext()).ToLocalChecked());
   Nan::Set(exports,
     Nan::New<String>("getSubject").ToLocalChecked(),
-    Nan::New<FunctionTemplate>(get_subject)->GetFunction());
+    Nan::New<FunctionTemplate>(get_subject)->GetFunction(Nan::GetCurrentContext()).ToLocalChecked());
   Nan::Set(exports,
     Nan::New<String>("getIssuer").ToLocalChecked(),
-    Nan::New<FunctionTemplate>(get_issuer)->GetFunction());
+    Nan::New<FunctionTemplate>(get_issuer)->GetFunction(Nan::GetCurrentContext()).ToLocalChecked());
   Nan::Set(exports,
     Nan::New<String>("parseCert").ToLocalChecked(),
-    Nan::New<FunctionTemplate>(parse_cert)->GetFunction());
+    Nan::New<FunctionTemplate>(parse_cert)->GetFunction(Nan::GetCurrentContext()).ToLocalChecked());
 }
 
 NODE_MODULE(x509, init)
diff --git a/src/x509.cc b/src/x509.cc
index 00e02ae..44ee132 100644
--- a/src/x509.cc
+++ b/src/x509.cc
@@ -37,13 +37,13 @@ std::string parse_args(const Nan::FunctionCallbackInfo<v8::Value>& info) {
     Nan::ThrowTypeError("Certificate must be a string.");
     return std::string();
   }
-
-  if (info[0]->ToString()->Length() == 0) {
+  std::string val = *Nan::Utf8String(info[0]);
+  if (val.length() == 0) {
     Nan::ThrowTypeError("Certificate argument provided, but left blank.");
     return std::string();
   }
 
-  return *Nan::Utf8String(info[0]->ToString());
+  return val;
 }
 
 
@@ -52,8 +52,8 @@ NAN_METHOD(verify) {
   Nan::HandleScope scope;
   OpenSSL_add_all_algorithms();
 
-  std::string cert_path = *String::Utf8Value(info[0]->ToString());
-  std::string ca_bundlestr = *String::Utf8Value(info[1]->ToString());
+  std::string cert_path = *Nan::Utf8String(info[0]);
+  std::string ca_bundlestr = *Nan::Utf8String(info[1]);
 
   X509_STORE *store = NULL;
   X509_STORE_CTX *verify_ctx = NULL;
@@ -115,7 +115,7 @@ NAN_METHOD(get_altnames) {
   if(parsed_arg.size() == 0) {
     info.GetReturnValue().SetUndefined();
   }
-  Local<Object> exports(try_parse(parsed_arg)->ToObject());
+  Local<Object> exports(try_parse(parsed_arg)->ToObject(Nan::GetCurrentContext()).ToLocalChecked());
   Local<Value> key = Nan::New<String>("altNames").ToLocalChecked();
   info.GetReturnValue().Set(
     Nan::Get(exports, key).ToLocalChecked());
@@ -128,7 +128,7 @@ NAN_METHOD(get_subject) {
   if(parsed_arg.size() == 0) {
     info.GetReturnValue().SetUndefined();
   }
-  Local<Object> exports(try_parse(parsed_arg)->ToObject());
+  Local<Object> exports(try_parse(parsed_arg)->ToObject(Nan::GetCurrentContext()).ToLocalChecked());
   Local<Value> key = Nan::New<String>("subject").ToLocalChecked();
   info.GetReturnValue().Set(
     Nan::Get(exports, key).ToLocalChecked());
@@ -141,7 +141,7 @@ NAN_METHOD(get_issuer) {
   if(parsed_arg.size() == 0) {
     info.GetReturnValue().SetUndefined();
   }
-  Local<Object> exports(try_parse(parsed_arg)->ToObject());
+  Local<Object> exports(try_parse(parsed_arg)->ToObject(Nan::GetCurrentContext()).ToLocalChecked());
   Local<Value> key = Nan::New<String>("issuer").ToLocalChecked();
   info.GetReturnValue().Set(
     Nan::Get(exports, key).ToLocalChecked());
@@ -154,7 +154,7 @@ NAN_METHOD(parse_cert) {
   if(parsed_arg.size() == 0) {
     info.GetReturnValue().SetUndefined();
   }
-  Local<Object> exports(try_parse(parsed_arg)->ToObject());
+  Local<Object> exports(try_parse(parsed_arg)->ToObject(Nan::GetCurrentContext()).ToLocalChecked());
   info.GetReturnValue().Set(exports);
   ERR_clear_error();
 }
@@ -459,7 +459,8 @@ Local<Value> parse_date(ASN1_TIME *date) {
 
   Local<Object> global = Nan::GetCurrentContext()->Global();
   Local<Object> DateObject = Nan::Get(global,
-    Nan::New<String>("Date").ToLocalChecked()).ToLocalChecked()->ToObject();
+    Nan::New<String>("Date").ToLocalChecked()).ToLocalChecked()
+      ->ToObject(Nan::GetCurrentContext()).ToLocalChecked();
   return scope.Escape(Nan::CallAsConstructor(DateObject, 1, args).ToLocalChecked());
 }