diff --git a/pkgs/development/python-modules/secp256k1/default.nix b/pkgs/development/python-modules/secp256k1/default.nix
index 2cd7590b83d..3cd6b2fe3cc 100644
--- a/pkgs/development/python-modules/secp256k1/default.nix
+++ b/pkgs/development/python-modules/secp256k1/default.nix
@@ -36,6 +36,7 @@ buildPythonPackage rec {
   '';
 
   postPatch = ''
+    sed -i '38,45d' setup.py
     substituteInPlace setup.py --replace ", 'pytest-runner==2.6.2'" ""
   '';