diff --git a/test-requirements.txt b/test-requirements.txt
index c0cb567..2ec182e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,4 +1,4 @@
 pytest>=3.6
 requests_mock==1.8.0
-pytest-cov==2.9.0
+pytest-cov==4.0.0
 coverage==5.1