diff --git a/library/setup.cfg b/library/setup.cfg
index d3637e3..6b85567 100644
--- a/library/setup.cfg
+++ b/library/setup.cfg
@@ -19,16 +19,17 @@ classifiers =
 	Operating System :: POSIX :: Linux
 	License :: OSI Approved :: MIT License
 	Intended Audience :: Developers
-	Programming Language :: Python :: 2.7
 	Programming Language :: Python :: 3
 	Topic :: Software Development
 	Topic :: Software Development :: Libraries
 	Topic :: System :: Hardware
 
 [options]
+python_requires = >= 3
 packages = grow
 install_requires =
 	st7735
+	pyyaml
 	fonts
 	font-roboto