diff --git a/pkgs/development/python-modules/karton-core/default.nix b/pkgs/development/python-modules/karton-core/default.nix
index 5dbd5f77fbbc..8d78b4fab0ef 100644
--- a/pkgs/development/python-modules/karton-core/default.nix
+++ b/pkgs/development/python-modules/karton-core/default.nix
@@ -12,7 +12,7 @@
 
 buildPythonPackage rec {
   pname = "karton-core";
-  version = "5.5.0";
+  version = "5.5.1";
   pyproject = true;
 
   disabled = pythonOlder "3.8";
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     owner = "CERT-Polska";
     repo = "karton";
     rev = "refs/tags/v${version}";
-    hash = "sha256-fjzZPq98AwNT+tiTvKZY2QsSD+FRUFx+oY84hPP7QdI=";
+    hash = "sha256-KaEXBNGcJN88gIv7suKcr1pK4ih/QbByxEy3nZFlIgk=";
   };
 
   build-system = [ setuptools ];