diff --git a/requirements-dev.txt b/requirements-dev.txt
index f7ddb53..fd22b9d 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@
 flake8==3.5.0
 pytest==3.4.0
 pytest-cov==2.5.1
-coverage==4.4.2
+coverage==4.5.1
 sphinx==1.6.6
 pep257==0.7.0
 aiohttp-session==2.1.0