diff --git a/requirements.txt b/requirements.txt
index c88bf435..2bedd65e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 py==1.4.12
 pytest==2.3.4
-invoke==0.2.0
\ No newline at end of file
+invoke==0.2.0
+wheel