diff --git a/pkgs/tools/networking/srelay/default.nix b/pkgs/tools/networking/srelay/default.nix
index da09395fc7a8..709e4f9594a4 100644
--- a/pkgs/tools/networking/srelay/default.nix
+++ b/pkgs/tools/networking/srelay/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl }:
+{ lib, stdenv, fetchurl, libxcrypt }:
 
 stdenv.mkDerivation rec {
   pname = "srelay";
@@ -11,6 +11,8 @@ stdenv.mkDerivation rec {
 
   patches = [ ./arm.patch ];
 
+  buildInputs = [ libxcrypt ];
+
   installPhase = "install -D srelay $out/bin/srelay";
 
   meta = {