diff --git a/pkgs/development/python-modules/cyclonedx-python-lib/default.nix b/pkgs/development/python-modules/cyclonedx-python-lib/default.nix
index c2e8eb3a48d5..7b04f6869252 100644
--- a/pkgs/development/python-modules/cyclonedx-python-lib/default.nix
+++ b/pkgs/development/python-modules/cyclonedx-python-lib/default.nix
@@ -23,7 +23,7 @@
 
 buildPythonPackage rec {
   pname = "cyclonedx-python-lib";
-  version = "6.4.2";
+  version = "6.4.3";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -32,7 +32,7 @@ buildPythonPackage rec {
     owner = "CycloneDX";
     repo = "cyclonedx-python-lib";
     rev = "refs/tags/v${version}";
-    hash = "sha256-uDppmYJiQt2Yix5vaWYqMDbPcHOEPz2pBK11lUZ54fI=";
+    hash = "sha256-9enilHkZ07loBisKObUmVLhJeXgY/HUiVrf2scPFB60=";
   };
 
   nativeBuildInputs = [