diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 60630a8f04a..fc64b5c5139 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -17060,7 +17060,7 @@ in modules // {
       sha256 = "9c12c370feda864c2f541cecce9bfb3a2a682c6c59c097a852e7b040dc6b8431";
     };
 
-    buildInputs = with self; [ pytest ];
+    buildInputs = with self; [ pytest pytestrunner ];
     propagatedBuildInputs = with self; [ six w3lib lxml cssselect ];
 
     checkPhase = ''