diff --git a/pkgs/by-name/on/onnx/package.nix b/pkgs/by-name/on/onnx/package.nix
index d5eec863c95f..31adc3753a6c 100644
--- a/pkgs/by-name/on/onnx/package.nix
+++ b/pkgs/by-name/on/onnx/package.nix
@@ -33,13 +33,13 @@ stdenv.mkDerivation (finalAttrs: {
   strictDeps = true;
 
   pname = "onnx";
-  version = "1.20.1";
+  version = "1.21.0";
 
   src = fetchFromGitHub {
     owner = "onnx";
     repo = "onnx";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-XZJXD6sBvVJ6cLPyDkKOW8oSkjqcw9whUqDWd7dxY3c=";
+    hash = "sha256-eF6BdTwTuHh6ckuLGN1d6z2GLU47lPqtzu4zIv8+cTs=";
   };
 
   outputs = [