diff --git a/requirements_dev.txt b/requirements_dev.txt
index 56e4545..002c39f 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -4,7 +4,7 @@ wheel==0.32.2
 watchdog==0.9.0
 flake8==3.6.0
 tox==3.5.2
-coverage==4.5.1
+coverage==4.5.2
 Sphinx==1.8.2
 twine==1.12.1