diff --git a/requirements_dev.txt b/requirements_dev.txt
index 9f44470..f30c980 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -8,7 +8,7 @@ httmock==1.2.6
 mccabe==0.6.1
 pep8-naming==0.4.1
 pip==9.0.1
-pytest-cov==2.5.1
+pytest-cov==2.8.1
 pytest-runner==2.11.1
 pytest==3.1.2
 PyYAML==3.12