diff --git a/Gemfile b/Gemfile
index bc04c2c..ee21e54 100644
--- a/Gemfile
+++ b/Gemfile
@@ -30,6 +30,8 @@ gem 'will_paginate', git: 'https://github.com/p7r/will_paginate.git', branch: 'r
 gem 'newrelic_rpm', '~> 3.7.2.195'
 
 group 'staging', 'production' do
+  gem 'kgio', '~> 2.9.2'
+  gem 'dalli', '~> 2.7.0'
   gem 'unicorn', '~> 4.8.2'
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 1958746..6c23221 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,6 +75,7 @@ GEM
       execjs
     coffee-script-source (1.3.3)
     columnize (0.3.6)
+    dalli (2.7.0)
     debugger (1.6.6)
       columnize (>= 0.3.1)
       debugger-linecache (~> 1.2.0)
@@ -252,11 +253,13 @@ DEPENDENCIES
   capybara (~> 2.2.1)
   carrierwave
   coffee-rails
+  dalli (~> 2.7.0)
   dotenv-rails (~> 0.10.0)
   factory_girl_rails (~> 4.4.1)
   foreman (~> 0.63.0)
   gruff
   jquery-rails
+  kgio (~> 2.9.2)
   mysql2 (~> 0.3.15)
   newrelic_rpm (~> 3.7.2.195)
   nokogiri
diff --git a/INSTALL.md b/INSTALL.md
index 9655712..3fa109a 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -21,9 +21,9 @@ Add the following to `/etc/sudoers` to allow the `deploy` user to manage nginx a
     deploy ALL=NOPASSWD:START_FOREMAN
     deploy ALL=NOPASSWD:/etc/init.d/nginx
 
-## Install MySQL
+## Install MySQL & Memcached
 
-    sudo apt-get install mysql-server mysql-client libmysqlclient-dev
+    sudo apt-get install mysql-server mysql-client libmysqlclient-dev memcached
 
 Login to mysql as root, and create the database and user account:
 
@@ -31,11 +31,11 @@ Login to mysql as root, and create the database and user account:
     CREATE USER 'xxx'@'localhost' IDENTIFIED BY 'xxx';
     GRANT ALL PRIVILEGES ON ensl.* TO 'xxx'@'localhost' WITH GRANT OPTION;
 
-## Install rbenv, ruby and bundler
+## Install rbenv, ruby, bundler and Image Magick
 
 As root, install dependencies
 
-    sudo apt-get install nginx git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libmysql-ruby libmysqlclient-dev
+    sudo apt-get install nginx git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libmysql-ruby imagemagick libmagickwand-dev
 
 Switch user to deploy, and install rbenv
 
@@ -58,4 +58,6 @@ Switch user to deploy, and install rbenv
 
 ## Install the ENSL site
 
+Create the `.env` and `config/database.yml` files with the appropriate credentials.
+
     mkdir /var/www/virtual/ensl.org/deploy
\ No newline at end of file