diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b2be92b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+result
diff --git a/README.md b/README.md
index 52dcc21..1b0cff8 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ D9FE 4119 F082 6F15 93BD  BD36 6162 DBA5 635E A16A
 { config, pkgs, ... }:
 {
   imports = [
-    (builtins.fetchTarball "https://github.com/r-raymond/nixos-mailserver/archive/v2.0.2.tar.gz")
+    (builtins.fetchTarball "https://github.com/r-raymond/nixos-mailserver/archive/v2.0.4.tar.gz")
   ];
 
   mailserver = {
diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..ff38a9c
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+sed -i -e "s/v[0-9]\+\.[0-9]\+\.[0-9]\+/$1/g" README.md