diff --git a/pkgs/development/python-modules/unearth/default.nix b/pkgs/development/python-modules/unearth/default.nix
index 8ff4f4590a36..a2f6ab05c389 100644
--- a/pkgs/development/python-modules/unearth/default.nix
+++ b/pkgs/development/python-modules/unearth/default.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchPypi,
+  fetchpatch,
   packaging,
   pdm-backend,
   httpx,
@@ -23,6 +24,16 @@ buildPythonPackage rec {
     hash = "sha256-HlPX9S9G3V+HXnf/HFWxJHfiFaCS5LZsl2SnffSptSA=";
   };
 
+  patches = [
+    # https://github.com/frostming/unearth/pull/176
+    (fetchpatch {
+      name = "fix-packaging-26.0-changes.patch";
+      url = "https://github.com/frostming/unearth/commit/69ece0800edeefb1daf035bb0ee348e17a4393fd.patch";
+      hash = "sha256-t/Ubv9qC1Fvh4JsnfVgOZO/O7ZpCGHugBUt9qAjnH8c=";
+      excludes = [ "pdm.lock" ];
+    })
+  ];
+
   build-system = [ pdm-backend ];
 
   dependencies = [