diff --git a/requirements.txt b/requirements.txt
index a9f6d1f..287853c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ ionhash~=1.1.0
 
 # Indirect dependencies
 pytest~=4.6.3
-pytest-cov~=2.7.1
+pytest-cov~=4.0.0
 pytest-subtests~=0.3.0
 jmespath~=0.9.0
 python-dateutil~=2.8.1