diff --git a/requirements_dev.txt b/requirements_dev.txt
index 7b7de15..c7c3f2b 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,5 +1,5 @@
 black
-coverage==4.5.3
+coverage==4.5.4
 coveralls==1.8.1
 flake8==3.7.8
 mock==3.0.5