diff --git a/pkgs/tools/networking/voms/default.nix b/pkgs/tools/networking/voms/default.nix
new file mode 100644
index 000000000000..06639a5ef129
--- /dev/null
+++ b/pkgs/tools/networking/voms/default.nix
@@ -0,0 +1,70 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+  # Native build inputs
+, autoreconfHook
+, bison
+, flex
+, pkg-config
+  # Build inputs
+, expat
+, gsoap
+, openssl
+, zlib
+}:
+
+stdenv.mkDerivation rec{
+  pname = "voms-unstable";
+  version = "2021-05-04";
+
+  src = fetchFromGitHub {
+    owner = "italiangrid";
+    repo = "voms";
+    rev = "61563152fce3a4e6860dd8ab8ab6e72b7908d8b8";
+    sha256 = "LNR0G4XrgxqjQmjyaKoZJLNoxtAGiTM93FG3jIU1u+Y=";
+  };
+
+  nativeBuildInputs = [
+    autoreconfHook
+    bison
+    flex
+    pkg-config
+  ];
+
+  buildInputs = [
+    expat
+    gsoap
+    openssl
+    zlib
+  ];
+
+  outputs = [ "bin" "out" "dev" "man" ];
+
+  preAutoreconf = ''
+    mkdir -p aux src/autogen
+  '';
+
+  postAutoreconf = ''
+    # FHS patching
+    substituteInPlace configure \
+      --replace "/usr/bin/soapcpp2" "${gsoap}/bin/soapcpp2"
+
+    # Tell gcc about the location of zlib
+    # See https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=voms
+    export GSOAP_SSL_PP_CFLAGS="$(pkg-config --cflags gsoapssl++ zlib)"
+    export GSOAP_SSL_PP_LIBS="$(pkg-config --libs gsoapssl++ zlib)"
+  '';
+
+  configureFlags = [
+    "--with-gsoap-wsdl2h=${gsoap}/bin/wsdl2h"
+  ];
+
+  meta = with lib; {
+    description = "The VOMS native service and APIs";
+    homepage = "https://italiangrid.github.io/voms/";
+    changelog = "https://github.com/italiangrid/voms/blob/master/ChangeLog";
+    license = licenses.asl20;
+    platforms = platforms.linux; # gsoap is currently Linux-only in Nixpkgs
+    maintainers = with maintainers; [ ShamrockLee ];
+  };
+}
diff --git a/pkgs/tools/networking/xrootd/default.nix b/pkgs/tools/networking/xrootd/default.nix
index a4c90f95e90d..0dc5c7a5eb04 100644
--- a/pkgs/tools/networking/xrootd/default.nix
+++ b/pkgs/tools/networking/xrootd/default.nix
@@ -4,15 +4,16 @@
 , fetchFromGitHub
 , cmake
 , cppunit
+, pkg-config
 , curl
 , fuse
 , libkrb5
 , libuuid
 , libxml2
 , openssl
-, pkg-config
 , readline
 , systemd
+, voms
 , zlib
 , enableTests ? true
 }:
@@ -52,6 +53,7 @@ stdenv.mkDerivation rec {
   ++ lib.optionals stdenv.isLinux [
     fuse
     systemd
+    voms
   ]
   ++ lib.optionals enableTests [
     cppunit
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index daa30701e59c..00f24f6a7ab3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1216,6 +1216,8 @@ with pkgs;
 
   ventoy-bin = callPackage ../tools/cd-dvd/ventoy-bin { };
 
+  voms = callPackage ../tools/networking/voms { };
+
   vopono = callPackage ../tools/networking/vopono { };
 
   winbox = callPackage ../tools/admin/winbox {