diff --git a/requirements-dev.txt b/requirements-dev.txt
index a0781e1..3ffb008 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -27,7 +27,7 @@ py==1.8.1
 Pygments==2.7.4
 pyparsing==2.4.7
 pytest==5.4.1
-pytest-cov==2.8.1
+pytest-cov==4.1.0
 pytest-mock==3.6.1
 PyYAML==5.4.1
 six==1.14.0