diff --git a/pkgs/development/python-modules/parsel/default.nix b/pkgs/development/python-modules/parsel/default.nix
index 9ebd5e9b9ea2..82d9107bfdde 100644
--- a/pkgs/development/python-modules/parsel/default.nix
+++ b/pkgs/development/python-modules/parsel/default.nix
@@ -19,7 +19,7 @@ buildPythonPackage rec {
     sha256 = "9ccd82b8a122345601f6f9209e972c0e8c3518a188fcff2d37cb4d7bc570b4b8";
   };
 
-  buildInputs = [ pytest pytestrunner ];
+  checkInputs = [ pytest pytestrunner ];
   propagatedBuildInputs = [ functools32 six w3lib lxml cssselect ];
 
   checkPhase = ''