diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0e4f17c..43fa18a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,4 +6,4 @@ Sphinx==1.8.1
 
 #testing
 pytest==3.8.1
-pytest-cov==2.5.1
+pytest-cov==2.6.0