diff --git a/pkgs/development/tools/rust/rustfmt/default.nix b/pkgs/development/tools/rust/rustfmt/default.nix
index 1a2bf7ac01c..95818a323d6 100644
--- a/pkgs/development/tools/rust/rustfmt/default.nix
+++ b/pkgs/development/tools/rust/rustfmt/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, rustUnstable, makeWrapper }:
+{ stdenv, fetchgit, rustUnstable, makeWrapper, llvmPackages_37 }:
 
 with rustUnstable;
 
@@ -10,6 +10,8 @@ buildRustPackage rec {
     sha256 = "0q72mfj2ph2n4cd0cs4p2mpyr2ixd6ss607kjlgfinjv6klk1i3b";
   };
 
+  buildInputs = [ llvmPackages_37.llvm ];
+
   depsSha256 = "13i9qaia1wn18lgfl69rrxw7b24bq1bpqhdck2jzxpv3wi2xshlw";
 
   meta = with stdenv.lib; {