diff --git a/pkgs/development/python-modules/isbnlib/default.nix b/pkgs/development/python-modules/isbnlib/default.nix
index 8bf7e67b9ecd..627bdeadfc1e 100644
--- a/pkgs/development/python-modules/isbnlib/default.nix
+++ b/pkgs/development/python-modules/isbnlib/default.nix
@@ -3,7 +3,7 @@
   buildPythonPackage,
   fetchFromGitHub,
   pytestCheckHook,
-  pytest-cov,
+  pytest-cov-stub,
   setuptools,
 }:
 
@@ -23,7 +23,7 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [
     pytestCheckHook
-    pytest-cov
+    pytest-cov-stub
   ];
 
   pytestFlagsArray = [ "isbnlib/test/" ];