diff --git a/Makefile b/Makefile
index 303af1c8..89e90abd 100644
--- a/Makefile
+++ b/Makefile
@@ -15,13 +15,13 @@ qt4: qt4py2
 qt5: qt5py3
 
 qt4py2:
-	pyrcc4 -py2 -o resources.py resources.qrc
+	pyrcc4 -py2 -o lib/resources.py resources.qrc
 
 qt4py3:
-	pyrcc4 -py3 -o resources.py resources.qrc
+	pyrcc4 -py3 -o lib/resources.py resources.qrc
 
 qt5py3:
-	pyrcc5 -o resources.py resources.qrc
+	pyrcc5 -o lib/resources.py resources.qrc
 
 clean:
 	rm -f ~/.labelImgSettings.pkl resources.pyc
diff --git a/labelImg.py b/labelImg.py
index b4cca861..6e0e03ac 100755
--- a/labelImg.py
+++ b/labelImg.py
@@ -26,8 +26,7 @@ except ImportError:
     from PyQt4.QtGui import *
     from PyQt4.QtCore import *
 
-import resources
-# Add internal libs
+from libs.resources import *
 from libs.constants import *
 from libs.utils import *
 from libs.settings import Settings
@@ -44,7 +43,6 @@ from libs.pascal_voc_io import XML_EXT
 from libs.yolo_io import YoloReader
 from libs.yolo_io import TXT_EXT
 from libs.ustr import ustr
-from libs.version import __version__
 from libs.hashableQListWidgetItem import HashableQListWidgetItem
 
 __appname__ = 'labelImg'
@@ -603,7 +601,7 @@ class MainWindow(QMainWindow, WindowMixin):
         elif osName == 'Linux':
             return ['xdg-open']
         elif osName == 'Darwin':
-            return ['open', '-a', 'Safari']
+            return ['open']
 
     ## Callbacks ##
     def showTutorialDialog(self):
diff --git a/libs/__init__.py b/libs/__init__.py
index e69de29b..af9f86bb 100644
--- a/libs/__init__.py
+++ b/libs/__init__.py
@@ -0,0 +1,2 @@
+__version_info__ = ('1', '8', '1')
+__version__ = '.'.join(__version_info__)
diff --git a/libs/version.py b/libs/version.py
deleted file mode 100644
index af9f86bb..00000000
--- a/libs/version.py
+++ /dev/null
@@ -1,2 +0,0 @@
-__version_info__ = ('1', '8', '1')
-__version__ = '.'.join(__version_info__)
diff --git a/setup.py b/setup.py
index e1485ffb..5f85c116 100644
--- a/setup.py
+++ b/setup.py
@@ -1,9 +1,18 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
-from setuptools import setup, find_packages
-from libs.version import __version__
+from setuptools import setup, find_packages, Command
 from sys import platform as _platform
+from shutil import rmtree
+import sys
+import os
+
+here = os.path.abspath(os.path.dirname(__file__))
+NAME = 'labelImg'
+about = {}
+
+with open(os.path.join(here, 'libs', '__init__.py')) as f:
+    exec(f.read(), about)
 
 with open('README.rst') as readme_file:
     readme = readme_file.read()
@@ -11,9 +20,14 @@ with open('README.rst') as readme_file:
 with open('HISTORY.rst') as history_file:
     history = history_file.read()
 
-requirements = [
-    # TODO: Different OS have different requirements
-]
+
+REQUIRED = []
+
+if (sys.version_info > (3, 0)):
+    REQUIRED = ['pyqt5', 'lxml']
+else:
+    print('\033[93m For py2, you are unable to installl pyqt4 by pip \033[0m')
+    REQUIRED = ['lxml']
 
 # OS specific settings
 SET_REQUIRES = []
@@ -27,7 +41,7 @@ elif _platform == "darwin":
 required_packages = find_packages()
 required_packages.append('labelImg')
 
-APP = ['labelImg.py']
+APP = [NAME]
 OPTIONS = {
     'argv_emulation': True,
     'iconfile': 'resources/icons/app.icns'
@@ -35,8 +49,8 @@ OPTIONS = {
 
 setup(
     app=APP,
-    name='labelImg',
-    version=__version__,
+    name=NAME,
+    version=about['__version__'],
     description="LabelImg is a graphical image annotation tool and label object bounding boxes in images",
     long_description=readme + '\n\n' + history,
     author="TzuTa Lin",
@@ -50,7 +64,7 @@ setup(
         ]
     },
     include_package_data=True,
-    install_requires=requirements,
+    install_requires=REQUIRED,
     license="MIT license",
     zip_safe=False,
     keywords='labelImg labelTool development annotation deeplearning',