diff --git a/pkgs/development/python-modules/trytond/default.nix b/pkgs/development/python-modules/trytond/default.nix
index ce39ed5d1a05..35d0a9322d4a 100644
--- a/pkgs/development/python-modules/trytond/default.nix
+++ b/pkgs/development/python-modules/trytond/default.nix
@@ -25,14 +25,14 @@
 
 buildPythonPackage rec {
   pname = "trytond";
-  version = "6.4.5";
+  version = "6.6.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-AF8LG68K+CvHpFOIoGbxD+lF7IVwBDk8K06I4uTNguI=";
+    sha256 = "sha256-fE1JBlvKIvDFjMat/lgOM22rIpMlqnxoo9p8VJF6szs=";
   };
 
   propagatedBuildInputs = [