diff --git a/dev-requirements.txt b/dev-requirements.txt
index a87cdb5..12abbe3 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,4 +1,4 @@
-coverage==4.2
+coverage==4.3.1
 mock==2.0.0
 nose==1.3.7
 nose-capturestderr==1.2