diff --git a/requirements_dev.txt b/requirements_dev.txt
index 2433d0b..7c00124 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,7 +5,7 @@ watchdog==0.9.0
 flake8==3.6.0
 coverage==4.5.3
 tox==3.8.6
-coverage==4.5.1
+coverage==4.5.3
 Sphinx==2.0.1
 twine==1.12.1