diff --git a/setup.py b/setup.py
index 1c3e101..00cccc7 100644
--- a/setup.py
+++ b/setup.py
@@ -12,6 +12,7 @@
     'six',
     'structlog',
     'tzlocal',
+    'blinker',
 ]
 
 if sys.version_info < (2, 7):