diff --git a/pkgs/development/web/iojs/default.nix b/pkgs/development/web/iojs/default.nix
index 3129b10f7b80..e13877e871ea 100644
--- a/pkgs/development/web/iojs/default.nix
+++ b/pkgs/development/web/iojs/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, python, utillinux, openssl, http-parser, zlib, nightly ? false }:
 
 let
-  version = if nightly then "1.2.1-nightly20150213f0296933f8" else "1.2.0";
+  version = if nightly then "1.2.1-nightly201502201bf91878e7" else "1.3.0";
   inherit (stdenv.lib) optional maintainers licenses platforms;
 in stdenv.mkDerivation {
   name = "iojs-${version}";
@@ -11,8 +11,8 @@ in stdenv.mkDerivation {
           then "https://iojs.org/download/nightly/v${version}/iojs-v${version}.tar.gz"
           else "https://iojs.org/dist/v${version}/iojs-v${version}.tar.gz";
     sha256 = if nightly
-             then "0v9njaggddi128v58rd34qknph8pn9c653gqd4y29l1mwjvqg62s"
-             else "17axqswpl252gliak1wjc2l9jk6n5jqdfa9f1vv7x9acj776yrik";
+             then "1bk0jiha7n3s9xawj77d4q1navq28pq061w2wa6cs70lik7n6ri4"
+             else "08g0kmz2978jrfx4551fi12ypcsv9p6vic89lfs08ki7ajw2yrgb";
   };
 
   prePatch = ''
diff --git a/maintainers/scripts/update-iojs b/pkgs/development/web/iojs/update-iojs
similarity index 84%
rename from maintainers/scripts/update-iojs
rename to pkgs/development/web/iojs/update-iojs
index e9accf273bf8..e0e073a0ff9b 100755
--- a/maintainers/scripts/update-iojs
+++ b/pkgs/development/web/iojs/update-iojs
@@ -1,4 +1,10 @@
-#!/bin/sh
+#!/bin/sh -e
+#
+# Fetch the latest io.js release (stable/nightly) and update
+# `default.nix` in this directory.
+#
+
+cd "$(dirname "$0")"
 
 latest() {
     curl -s "$1" | grep 'href="v' \
@@ -33,11 +39,11 @@ nightly=$(latest_log nightly 'https://iojs.org/download/nightly/')
 
 sed -i \
     "/version = if nightly/s/then.*/then \"$nightly\" else \"$stable\";/" \
-    pkgs/development/web/iojs/default.nix
+    default.nix
 
 stableHash=$(hash_log "$(url iojs.src)")
 nightlyHash=$(hash_log "$(url iojs-nightly.src)")
 
 sed -i \
     "/sha256 = if nightly/{N;s/\"[^\"]*\"/\"$nightlyHash\"/;N;s/\"[^\"]*\";/\"$stableHash\";/}" \
-    pkgs/development/web/iojs/default.nix
+    default.nix