--- a/setup.cfg	2019-03-09 17:14:40.127863655 -0600
+++ b/setup.cfg	2019-03-09 17:15:22.135345396 -0600
@@ -57,7 +57,6 @@
 	setuptools_scm>=1.15.0
 	setuptools_scm_git_archive>=1.0
 install_requires = 
-	backports.functools_lru_cache
 	six>=1.11.0
 	more_itertools>=2.6