diff --git a/setup.py b/setup.py
index 57c82f4..b842f0a 100644
--- a/setup.py
+++ b/setup.py
@@ -31,7 +31,7 @@
           "test": [
               'pylint==2.10.*',
               'pytest==6.2.*',
-              'pytest-cov==2.12.*',
+              'pytest-cov>=2.12,<4.2',
           ]
       },
       entry_points="""