Fix classifiers
@@ -143,12 +143,11 @@ Intended Audience :: Science/Research
Intended Audience :: Developers
License :: OSI Approved :: MIT License
Programming Language :: Python
-Programming Language :: Python :: 2
-Programming Language :: Python :: 2.7
Programming Language :: Python :: 3
Programming Language :: Python :: 3.5
Programming Language :: Python :: 3.6
Programming Language :: Python :: 3.7
+Programming Language :: Python :: 3 :: Only
Programming Language :: Python :: Implementation :: Cython
Topic :: Software Development
Topic :: Scientific/Engineering
