diff --git a/requirements_dev.txt b/requirements_dev.txt
index 515784e..93489c6 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,6 +6,6 @@ watchdog==0.8.3
 Sphinx==1.6.4
 tox==2.9.1
 flake8==3.4.1
-coverage==4.4.1
+coverage==4.5.3
 cryptography==2.1.1
 PyYAML==3.12