diff --git a/pkgs/development/python-modules/vallox-websocket-api/default.nix b/pkgs/development/python-modules/vallox-websocket-api/default.nix
index fb3197b6b9e5..2d82aa97c507 100644
--- a/pkgs/development/python-modules/vallox-websocket-api/default.nix
+++ b/pkgs/development/python-modules/vallox-websocket-api/default.nix
@@ -13,7 +13,7 @@
 
 buildPythonPackage rec {
   pname = "vallox-websocket-api";
-  version = "4.0.2";
+  version = "4.0.3";
   format = "pyproject";
 
   disabled = pythonOlder "3.8";
@@ -22,7 +22,7 @@ buildPythonPackage rec {
     owner = "yozik04";
     repo = "vallox_websocket_api";
     rev = "refs/tags/${version}";
-    hash = "sha256-a9cYYRAKX9sY9fQhefLWgyvk0vQl7Ao3zvw0SAtFW/Q=";
+    hash = "sha256-L6uLA8iVYzh3wFVSwxzleHhu22sQeomq9N9A1oAxpf4=";
   };
 
   nativeBuildInputs = [