diff --git a/requirements_dev.txt b/requirements_dev.txt
index 9d7da80..8e6af90 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,7 +3,7 @@ wheel==0.30.0
 watchdog==0.8.3
 flake8==3.5.0
 tox==2.9.1
-coverage==4.4.2
+coverage==5.1
 Sphinx==1.6.4
 cryptography==2.1.4
 PyYAML==3.12