diff --git a/pkgs/development/python-modules/portalocker/default.nix b/pkgs/development/python-modules/portalocker/default.nix
index 7d536c83782a..82be4b8151f3 100644
--- a/pkgs/development/python-modules/portalocker/default.nix
+++ b/pkgs/development/python-modules/portalocker/default.nix
@@ -10,12 +10,12 @@
 }:
 
 buildPythonPackage rec {
-  version = "1.5.0";
+  version = "1.5.1";
   pname = "portalocker";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "08y5k39mn5a7n69wv0hsyjqb51lazs4i4dpxp42nla2lhllnpbyr";
+    sha256 = "08d8vm373fbx90wrql2i7025d4ir54sq8ahx6g1pw9h793zqrn0y";
   };
 
   checkInputs = [