diff --git a/pkgs/tools/security/bash-supergenpass/default.nix b/pkgs/tools/security/bash-supergenpass/default.nix
index f72c916acf99..53bc45acf8f7 100644
--- a/pkgs/tools/security/bash-supergenpass/default.nix
+++ b/pkgs/tools/security/bash-supergenpass/default.nix
@@ -1,8 +1,14 @@
-{ stdenv, fetchFromGitHub, makeWrapper, openssl, coreutils, gnugrep }:
+{ stdenv
+, fetchFromGitHub
+, unstableGitUpdater
+, makeWrapper
+, openssl
+, coreutils
+, gnugrep }:
 
 stdenv.mkDerivation {
-  pname = "bash-supergenpass-unstable";
-  version = "2018-04-18";
+  pname = "bash-supergenpass";
+  version = "unstable-2018-04-18";
 
   nativeBuildInputs = [ makeWrapper ];
 
@@ -18,6 +24,8 @@ stdenv.mkDerivation {
     wrapProgram "$out/bin/supergenpass" --prefix PATH : "${stdenv.lib.makeBinPath [ openssl coreutils gnugrep ]}"
   '';
 
+  passthru.updateScript = unstableGitUpdater { };
+
   meta = with stdenv.lib; {
     description = "Bash shell-script implementation of SuperGenPass password generation";
     longDescription = ''
@@ -36,4 +44,3 @@ stdenv.mkDerivation {
     homepage = "https://github.com/lanzz/bash-supergenpass";
   };
 }
-