diff --git a/pkgs/tools/misc/urn-timer/default.nix b/pkgs/tools/misc/urn-timer/default.nix
index df0d3bdee244..8af36c2bca18 100644
--- a/pkgs/tools/misc/urn-timer/default.nix
+++ b/pkgs/tools/misc/urn-timer/default.nix
@@ -11,19 +11,15 @@
 
 stdenv.mkDerivation {
   pname = "urn-timer";
-  version = "unstable-2023-07-01";
+  version = "unstable-2023-07-31";
 
   src = fetchFromGitHub {
     owner = "paoloose";
     repo = "urn";
-    rev = "8efdabcdd806b3b8997b82925d26209e6da8311b";
-    hash = "sha256-lQVdHD3IkITJ2P2zimhFLTxmOzZkdWOg/RhR2xlBLJU=";
+    rev = "2dad51949aa21e0e66a3d34e916fb66689c6be2e";
+    hash = "sha256-0pZjgKW4kyBgMGKEa8ZMhKtzbJX2MoXKID++iy16m2A=";
   };
 
-  postPatch = ''
-    substituteInPlace Makefile --replace 'rsync -a --exclude=".*"' 'cp -r'
-  '';
-
   nativeBuildInputs = [
     xxd
     pkg-config