diff --git a/setup.cfg b/setup.cfg
index 0aa11d0..246c468 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -54,6 +54,7 @@ include_package_data = True
 install_requires =
   pathspec >= 0.5.3
   pyyaml
+  setuptools
 
 test_suite = tests