diff --git a/pkgs/development/python-modules/onnxmltools/default.nix b/pkgs/development/python-modules/onnxmltools/default.nix
index 350cea07a6d0..809ab48115ba 100644
--- a/pkgs/development/python-modules/onnxmltools/default.nix
+++ b/pkgs/development/python-modules/onnxmltools/default.nix
@@ -23,14 +23,14 @@
 
 buildPythonPackage rec {
   pname = "onnxmltools";
-  version = "1.13";
+  version = "1.14.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "onnx";
     repo = "onnxmltools";
-    tag = "v${version}";
-    hash = "sha256-uNd7N7/FgX8zaJp8ouvftwGqGqas8lZRXFmjpS+t2B4=";
+    tag = version;
+    hash = "sha256-CcZlGLX8/ANHnhoOv5s/ybBN74gRH/8eLYJ6q/BJo/4=";
   };
 
   postPatch = ''
@@ -71,7 +71,7 @@ buildPythonPackage rec {
   meta = {
     description = "ONNXMLTools enables conversion of models to ONNX";
     homepage = "https://github.com/onnx/onnxmltools";
-    changelog = "https://github.com/onnx/onnxmltools/blob/v${version}/CHANGELOGS.md";
+    changelog = "https://github.com/onnx/onnxmltools/blob/${src.tag}/CHANGELOGS.md";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ happysalada ];
   };