diff --git a/requirements-dev.txt b/requirements-dev.txt
index 130f3f7..9ae29d8 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,5 +2,5 @@
 
 coveralls==2.0.0
 pytest==5.4.2
-pytest-cov==2.8.1
+pytest-cov==2.9.0
 pytest-mock==3.1.0