diff --git a/pkgs/tools/security/mkpasswd/default.nix b/pkgs/tools/security/mkpasswd/default.nix
index c884c2790006..23a8f5d4fbd7 100644
--- a/pkgs/tools/security/mkpasswd/default.nix
+++ b/pkgs/tools/security/mkpasswd/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, whois, perl, pkg-config }:
+{ lib, stdenv, whois, libxcrypt, perl, pkg-config }:
 
 stdenv.mkDerivation {
   name = "mkpasswd-${whois.version}";
@@ -6,6 +6,7 @@ stdenv.mkDerivation {
   src = whois.src;
 
   nativeBuildInputs = [ perl pkg-config ];
+  buildInputs = [ libxcrypt ];
 
   preConfigure = whois.preConfigure;
   buildPhase = "make mkpasswd";