diff --git a/requirements-dev.txt b/requirements-dev.txt
index 9a249c9..fb92b21 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,5 +6,5 @@ pytest==3.8.1
 pytest-pep8==1.0.6
 mock==2.0.0
 scikit-learn==0.20.0
-pytest-cov==2.6.0
+pytest-cov==2.8.1
 coveralls==1.5.0
\ No newline at end of file