diff --git a/pkgs/development/ocaml-modules/pyml/default.nix b/pkgs/development/ocaml-modules/pyml/default.nix
index dc7f13cbcb5a..29cd59bbb01c 100644
--- a/pkgs/development/ocaml-modules/pyml/default.nix
+++ b/pkgs/development/ocaml-modules/pyml/default.nix
@@ -9,19 +9,15 @@
 
 buildDunePackage (finalAttrs: {
   pname = "pyml";
-  version = "20231101";
+  version = "20250807";
 
   src = fetchFromGitHub {
     owner = "ocamllibs";
     repo = "pyml";
     tag = finalAttrs.version;
-    hash = "sha256-0Yy5T/S3Npwt0XJmEsdXGg5AXYi9vV9UG9nMSzz/CEc=";
+    hash = "sha256-WPtmj9EEs7P72OXWJg1syIrbLuh7u4V4W4nyozXmSa0=";
   };
 
-  patches = [
-    ./remove-stdcompat.patch
-  ];
-
   buildInputs = [
     utop
   ];
@@ -37,6 +33,7 @@ buildDunePackage (finalAttrs: {
   ];
 
   strictDeps = true;
+  __structuredAttrs = true;
 
   doCheck = true;
 
diff --git a/pkgs/development/ocaml-modules/pyml/remove-stdcompat.patch b/pkgs/development/ocaml-modules/pyml/remove-stdcompat.patch
deleted file mode 100644
index 5d8bdb739f59..000000000000
--- a/pkgs/development/ocaml-modules/pyml/remove-stdcompat.patch
+++ /dev/null
@@ -1,11 +0,0 @@
-diff --git a/pyml_stubs.c b/pyml_stubs.c
-index 40e3481..e7826f1 100644
---- a/pyml_stubs.c
-+++ b/pyml_stubs.c
-@@ -11,7 +11,6 @@
- #include <stdio.h>
- #include <stdlib.h>
- #include <errno.h>
--#include <stdcompat.h>
- #include <assert.h>
- #include "pyml_stubs.h"