--- a/setup.py	Fri Nov 02 16:24:47 2018 +0200
+++ b/setup.py	Wed Nov 28 22:27:28 2018 +0200
@@ -43,6 +43,7 @@
           'Development Status :: 3 - Alpha',
           'License :: OSI Approved :: MIT License',
           'Programming Language :: Python :: 2',
+          'Programming Language :: Python :: 3',
           'Intended Audience :: Science/Research',
           'Topic :: Scientific/Engineering :: Atmospheric Science',
       ],