diff --git a/pkgs/tools/backup/rdedup/default.nix b/pkgs/tools/backup/rdedup/default.nix
index bd5c10ea122..29204417b22 100644
--- a/pkgs/tools/backup/rdedup/default.nix
+++ b/pkgs/tools/backup/rdedup/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchFromGitHub, rustPlatform, pkgconfig, openssl, libsodium
-, llvmPackages, clang_39, lzma
+, llvmPackages, clang, lzma
 , Security }:
 
 rustPlatform.buildRustPackage rec {
@@ -19,7 +19,7 @@ rustPlatform.buildRustPackage rec {
     ./v3.1.1-fix-Cargo.lock.patch
   ];
 
-  nativeBuildInputs = [ pkgconfig llvmPackages.libclang clang_39 ];
+  nativeBuildInputs = [ pkgconfig llvmPackages.libclang clang ];
   buildInputs = [ openssl libsodium lzma ]
     ++ (stdenv.lib.optional stdenv.isDarwin Security);