diff --git a/pkgs/development/python-modules/filebytes/default.nix b/pkgs/development/python-modules/filebytes/default.nix
index 332ec50596b7..533bede02047 100644
--- a/pkgs/development/python-modules/filebytes/default.nix
+++ b/pkgs/development/python-modules/filebytes/default.nix
@@ -1,23 +1,38 @@
 {
   lib,
   buildPythonPackage,
-  fetchPypi,
+  fetchFromGitHub,
+  fetchpatch,
+  setuptools,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "filebytes";
   version = "0.10.2";
-  format = "setuptools";
+  pyproject = true;
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "0h97i6h525hg401dvvaa5krxi184qpvldbdn0izmirvr9pvh4hkn";
+  src = fetchFromGitHub {
+    owner = "sashs";
+    repo = "filebytes";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-8DGVCqWnEiqLCKWAYWrAjr50ZB6SMPMH+VqMqpALnVo=";
   };
 
+  patches = [
+    # Upstream PR: https://github.com/sashs/filebytes/pull/36
+    (fetchpatch {
+      name = "python-3.14.patch";
+      url = "https://github.com/sashs/filebytes/commit/469058d50d4b7ff8da54b623a0a1aa972cd78dc6.patch";
+      hash = "sha256-VizYOqyJ3xpJIU4KKsYcz2DCurlfrWTgdsn84FVWD6w=";
+    })
+  ];
+
+  build-system = [ setuptools ];
+
   meta = {
     homepage = "https://scoding.de/filebytes-introduction";
-    license = lib.licenses.gpl2;
+    license = lib.licenses.bsd3;
     description = "Scripts to parse ELF, PE, Mach-O and OAT (Android Runtime)";
     maintainers = with lib.maintainers; [ bennofs ];
   };
-}
+})