diff --git a/Gemfile.lock b/Gemfile.lock
index 4d647f8..0238bc0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    rbtc_arbitrage (2.4.2)
+    rbtc_arbitrage (2.5.0.rc1)
       activemodel (~> 4.0)
       activesupport (~> 4.0)
       bitstamp-rbtc-arbitrage (= 0.4.0)
diff --git a/lib/rbtc_arbitrage.rb b/lib/rbtc_arbitrage.rb
index 669f8c1..87bb439 100644
--- a/lib/rbtc_arbitrage.rb
+++ b/lib/rbtc_arbitrage.rb
@@ -1,7 +1,4 @@
 require 'bundler'
-Dir.chdir("#{File.dirname(__FILE__)}/../") do
-  Bundler.require(:default)
-end
 require 'bitstamp'
 require 'thor'
 require_relative 'rbtc_arbitrage/campbx.rb'
diff --git a/lib/rbtc_arbitrage/version.rb b/lib/rbtc_arbitrage/version.rb
index 43a7c3e..0aa43d6 100644
--- a/lib/rbtc_arbitrage/version.rb
+++ b/lib/rbtc_arbitrage/version.rb
@@ -1,3 +1,3 @@
 module RbtcArbitrage
-  VERSION = "2.4.2"
+  VERSION = "2.5.0.rc1"
 end
diff --git a/rbtc_arbitrage.gemspec b/rbtc_arbitrage.gemspec
index c55ec37..8ba478d 100644
--- a/rbtc_arbitrage.gemspec
+++ b/rbtc_arbitrage.gemspec
@@ -23,14 +23,15 @@ Gem::Specification.new do |spec|
   spec.add_dependency "rake", "10.1.1"
 
   spec.add_dependency "faraday", "0.8.8"
-  spec.add_dependency "activemodel", ">= 3.1"
-  spec.add_dependency "activesupport", ">= 3.1"
+  spec.add_dependency "activemodel", "~> 4.0"
+  spec.add_dependency "activesupport", "~> 4.0"
   spec.add_dependency "thor", '0.18.1'
   spec.add_dependency "btce", '0.2.4'
   spec.add_dependency "stathat", '0.1.7'
   spec.add_dependency "coinbase", '2.1.0'
   spec.add_dependency "pony", '1.10'
   spec.add_dependency "tco", "0.1.0"
-  spec.add_dependency "bitstamp-rbtc-arbitrage"
+  spec.add_dependency "bitstamp-rbtc-arbitrage", "0.4.0"
   spec.add_dependency "tzinfo", '0.3.39'
+  spec.add_dependency "mail", "2.6.1"
 end