diff --git a/pkgs/applications/networking/nntp-proxy/default.nix b/pkgs/applications/networking/nntp-proxy/default.nix
index 626913cd60a4..a3a136a32695 100644
--- a/pkgs/applications/networking/nntp-proxy/default.nix
+++ b/pkgs/applications/networking/nntp-proxy/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchFromGitHub, libconfig, pkg-config, libevent, openssl }:
+{ lib, stdenv, fetchFromGitHub, libconfig, pkg-config, libevent, openssl, libxcrypt }:
 
 stdenv.mkDerivation {
   pname = "nntp-proxy";
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
   };
 
   nativeBuildInputs = [ pkg-config ];
-  buildInputs = [ libconfig libevent openssl ];
+  buildInputs = [ libconfig libevent openssl libxcrypt ];
 
   installFlags = [ "INSTALL_DIR=$(out)/bin/" ];