diff --git a/requirements_dev.txt b/requirements_dev.txt
index 1c7dece..331f20d 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,7 +5,7 @@ watchdog==0.9.0
 flake8==3.6.0
 tox==3.6.0
 Sphinx==1.8.2
-coverage==4.5.2
+coverage==4.5.3
 twine==1.12.1
 
 pytest==4.0.2