diff --git a/requirements_dev.txt b/requirements_dev.txt
index 6f904af..258ccc7 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -4,7 +4,7 @@ wheel==0.31.1
 watchdog==0.8.3
 flake8==3.5.0
 tox==3.1.1
-coverage==4.5.1
+coverage==4.5.2
 Sphinx==1.7.5
 cryptography==2.2.2
 PyYAML==3.13