diff --git a/dev-requirements.txt b/dev-requirements.txt
index 428e830..4c7fd3c 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,5 +1,5 @@
 pytest>=3.6
-pytest-cov==2.7.1
+pytest-cov==2.8.1
 setuptools==45.0.0
 wheel==0.33.6
 twine==3.1.1