Rails 3 -> Ahoy plugin for user activity tracking-> Installation error

Question

I have installed the Gem Ahoy as per the instruction in the link -> https://github.com/ankane/ahoy

Add this line to your application’s Gemfile:

gem 'ahoy_matey'

And add the javascript file in app/assets/javascripts/application.js after jQuery.

//= require jquery
//= require ahoy

MySQL or SQLite

Add activeuuid to your Gemfile.

gem 'activeuuid', '>= 0.5.0'

And run:

rails generate ahoy:stores:active_record
rake db:migrate

The last command produces following error

rake db:migrate
==  CreateVisits: migrating ===================================================
-- create_table(:visits, {:id=>false})
rake aborted!
StandardError: An error has occurred, this and all later migrations canceled:

PG::UndefinedObject: ERROR:  type "binary" does not exist
LINE 1: CREATE TABLE "visits" ("id" binary(16) PRIMARY KEY, "visitor...