diff --git a/.travis.yml b/.travis.yml
index 81cc3a1..8110a24 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,6 @@ addons:
       - g++-4.9
 env: CXX=g++-4.9 CC=gcc-4.9
 node_js:
-    - "4"
-    - "6"
     - "8"
     - "10"
+    - "12"
diff --git a/package.json b/package.json
index fa417a0..3765113 100644
--- a/package.json
+++ b/package.json
@@ -1,12 +1,16 @@
 {
   "name": "monitr",
   "description": "Node process monitoring tool",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "author": "Rohini Harendra <rohini.raghav@gmail.com>",
   "contributors": [
     {
       "name": "ET",
       "email": "evan.torrie@yahoo.com"
+    },
+    {
+      "name": "Sylvio Marcondes",
+      "email": "sylviom@yahoo.com"
     }
   ],
   "os": [
diff --git a/src/monitor.cc b/src/monitor.cc
index bf3cf3c..5913495 100644
--- a/src/monitor.cc
+++ b/src/monitor.cc
@@ -162,11 +162,15 @@ static void Interrupter(v8::Isolate* isolate, void *data) {
 
     fprintf(stderr, "Interrupted: (frames: %d of %d)\n", std::min(frameCount, kMaxFrames), frameCount);
     for (int i = 0; i < stack->GetFrameCount(); ++i ) {
-        v8::Local<StackFrame> frame = stack->GetFrame( i );
+        v8::Local<StackFrame> frame = stack->GetFrame(
+#if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION >= 7)
+             isolate, 
+#endif
+             i );
         int line = frame->GetLineNumber();
         int col = frame->GetColumn();
-        v8::String::Utf8Value fn(frame->GetFunctionName());
-        v8::String::Utf8Value script(frame->GetScriptName());
+        Nan::Utf8String fn(frame->GetFunctionName());
+        Nan::Utf8String script(frame->GetScriptName());
 
         fprintf(stderr, "    at %s (%s:%d:%d)\n",
                 fn.length() == 0 ? "<anonymous>" : *fn, *script, line, col);
@@ -667,7 +671,8 @@ int NodeMonitor::getIntFunction(const char* funcName) {
     Nan::HandleScope scope;
     Local<Value> res = callFunction(funcName);
     if (res->IsNumber()) {
-        return res->Uint32Value();
+        uint32_t value = res->Uint32Value(Nan::GetCurrentContext()).FromJust();
+        return value;
     }
     return 0;
 }
@@ -677,7 +682,8 @@ bool NodeMonitor::getBooleanFunction(const char* funcName) {
     Nan::HandleScope scope;
     Local<Value> res = callFunction(funcName);
     if (res->IsBoolean()) {
-        return res->BooleanValue();
+        bool value = res->BooleanValue(Nan::GetCurrentContext()).FromJust();
+        return value;
     }
     return false;
 }
@@ -949,7 +955,7 @@ static NAN_METHOD(SetterIPCMonitorPath) {
         (!info[0]->IsString() && !info[0]->IsUndefined() && !info[0]->IsNull())) {
         THROW_BAD_ARGS();
     }
-    String::Utf8Value ipcMonitorPath(info[0]);
+    Nan::Utf8String ipcMonitorPath(info[0]);
     _ipcMonitorPath = *ipcMonitorPath;
 }