diff --git a/tox.ini b/tox.ini
index 65f75fc..7adff29 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,7 +22,8 @@ deps =
     pytest==8.2.0
     pytest-asyncio==0.20.3;python_version=="3.7"
     pytest-asyncio==0.23.6;python_version>"3.7"
-    pytest-cov==5.0.0
+    pytest-cov==4.0.0;python_version=="3.7"
+    pytest-cov==5.0.0;python_version>"3.7"
     mock==4.0.3;python_version<"3.8"
     freezegun==1.5.1
 setenv =