diff --git a/pkgs/development/python-modules/portalocker/default.nix b/pkgs/development/python-modules/portalocker/default.nix
index 6f57d2c4313..201d296b223 100644
--- a/pkgs/development/python-modules/portalocker/default.nix
+++ b/pkgs/development/python-modules/portalocker/default.nix
@@ -1,6 +1,7 @@
 { buildPythonPackage
 , fetchPypi
 , lib
+, fetchpatch
 , sphinx
 , flake8
 , pytest
@@ -27,6 +28,13 @@ buildPythonPackage rec {
     pytestpep8
   ];
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/WoLpH/portalocker/commit/7741925738c7e66ae9c4a0944a04b6a3088037d5.patch";
+      sha256 = "1g95rnfbnagkkk9qfzzd5346dl3clbgjnzr2wk09m0wphds7zd8z";
+    })
+  ];
+
   meta = with lib; {
     description = "A library to provide an easy API to file locking";
     homepage = https://github.com/WoLpH/portalocker;