Update setup.py

Author: Jash271

setup.py

@@ -10,13 +10,13 @@
     name='detect_mask',
     license="MIT",
     description='Python Package for detecting masks in the input Photos ,Pull out the camera for real time mask detection',
-    version='v0.3.0',
+    version='v0.4.0',
     long_description=description,
     url='https://github.com/Jash271/Detect_Mask',
     packages=setuptools.find_packages(),
 
     python_requires=">=3.6.8",
-    install_requires=[],
+    install_requires=['opencv-python'],
     classifiers=[
         'Development Status :: 4 - Beta',
         'License :: OSI Approved :: MIT License',