diff --git a/requirements.txt b/requirements.txt
index 1766b4e..9d2ba4a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@
 nose==1.3.7
 unittest2==1.1.0
 six==1.10.0
-coverage==4.0.2
+coverage==3.7.1