diff --git a/Gemfile b/Gemfile
index 8302d14..c128fba 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,9 +3,9 @@ source 'http://rubygems.org'
 gem 'rails', '4.0.5'
 gem 'jquery-rails', '3.0.4'
 gem 'rails_autolink'
-gem 'mysql2'
+gem 'mysql2', '~> 0.3.18'
 gem 'devise'
-gem 'twitter_oauth', git: 'git://github.com/moomerman/twitter_oauth.git'
+gem 'twitter_oauth', git: 'https://github.com/moomerman/twitter_oauth.git'
 gem 'therubyracer'
 gem 'exception_notification'
 gem 'nested_form'
@@ -23,13 +23,13 @@ gem 'redis'
 gem 'resque-scheduler', '2.3.1', :require => 'resque_scheduler'
 gem 'daemons'
 #gem 'db2fog' (not compatible with Rails 4, see https://github.com/hakanensari/db2fog for Rails 4 version)
-gem 'simplificator-rwebthumb', :git => "git://github.com/simplificator/rwebthumb.git"
+gem 'simplificator-rwebthumb', :git => "https://github.com/simplificator/rwebthumb.git"
 gem 'tweetstream'
 gem 'capistrano', '~> 2.15.4'
 gem 'rack-utf8_sanitizer'
 gem 'newrelic_rpm'
 gem 'actionpack-xml_parser'
-gem 'activeadmin', github: 'gregbell/active_admin'
+gem 'activeadmin', git: 'https://github.com/activeadmin/activeadmin.git', tag: 'v1.0.0.pre5'
 gem 'chronic'
 gem 'non-stupid-digest-assets'
 gem 'em-http-request'
@@ -38,6 +38,7 @@ gem 'tzinfo-data'
 gem 'turbolinks'
 gem 'geokit-rails'
 gem 'clockwork'
+gem 'activerecord-native_db_types_override'
 
 # to use debugger
 # gem 'ruby-debug'
@@ -67,4 +68,3 @@ group :test do
   gem 'ZenTest'
   gem 'database_cleaner', '~> 1.2.0'
 end
-