diff --git a/pkgs/development/python-modules/aiocontextvars/default.nix b/pkgs/development/python-modules/aiocontextvars/default.nix
index 09eb8b0dbcfff..9684dc406ad64 100644
--- a/pkgs/development/python-modules/aiocontextvars/default.nix
+++ b/pkgs/development/python-modules/aiocontextvars/default.nix
@@ -1,7 +1,6 @@
 { lib
 , buildPythonPackage
 , fetchFromGitHub
-, pytest-runner
 , pytestCheckHook
 , pytest-asyncio
 , isPy27
@@ -20,9 +19,10 @@ buildPythonPackage rec {
     sha256 = "0a2gmrm9csiknc8n3si67sgzffkydplh9d7ga1k87ygk2aj22mmk";
   };
 
-  buildInputs = [
-    pytest-runner
-  ];
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "'pytest-runner'," ""
+  '';
 
   nativeCheckInputs = [
     pytestCheckHook