diff --git a/requirements_dev.txt b/requirements_dev.txt
index fb1dcb0..0cdfafb 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,7 +3,7 @@ wheel==0.30.0
 watchdog==0.8.3
 flake8==3.4.1
 tox==2.9.1
-coverage==4.4.1
+coverage==4.4.2
 Sphinx==1.6.4
 
 pytest==3.2.2