diff --git a/setup.py b/setup.py
index 1df7a86..26a3ca3 100755
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
               'Intended Audience :: Science/Research',
               "License :: OSI Approved :: BSD License",
               'Operating System :: OS Independent',
-              "Programming Language :: Python :: 2.7",
+              "Programming Language :: Python :: 3.5",
               'Topic :: Scientific/Engineering :: Astronomy'
           ]
       )