diff --git a/Gemfile b/Gemfile
index e5f3af0..5ab84fd 100755
--- a/Gemfile
+++ b/Gemfile
@@ -33,7 +33,7 @@ gem 'jquery-rails'
 # gem 'jbuilder'
 
 # Use unicorn as the app server
- gem 'unicorn'
+ gem 'unicorn', '~>4.8.0'
 
 # Deploy with Capistran
 # gem 'capistrano'
@@ -82,7 +82,7 @@ gem 'haml'
 #gem 'wikicloth'
 #gem 'gollum-lib'
 gem 'awesome_nested_set'
-gem 'annotate', ">=2.5.0"
+gem 'annotate', "~>2.6.0"
 gem 'carrierwave', "~>0.9.0"
 group :development, :test do 
 gem 'factory_girl_rails',"~>4.5.0"