diff --git a/setup.py b/setup.py
index 7532be8..9ef0322 100644
--- a/setup.py
+++ b/setup.py
@@ -31,6 +31,7 @@ extras_require = {
     ':python_version in "2.4, 2.5, 2.6"':
         ['contextlib2', 'backport_collections', 'mock'],
     ':python_version in "2.7, 3.1, 3.2"': ['contextlib2', 'mock'],
+    ':python_version in "3.4, 3.5, 3.6"': ['yarl'],
 }