diff --git a/setup.py b/setup.py
index d9d91c07..e8bd3c17 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,8 @@
           "html2text",
           "nose==1.2.1",
           "mock",
-          "coverage"
+          "coverage",
+          "flanker"
           ]
       )