diff --git a/Gemfile b/Gemfile
index e2e5c70..5c8954d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -29,7 +29,7 @@ end
 gem 'jquery-rails'
 gem 'rack-cache', :require => 'rack/cache'
 gem 'rmagick'
-gem 'dragonfly', '~>0.9.12'
+gem 'dragonfly', '~>1.4.0'
 gem "pry"
 gem 'rb-readline'
 # To use ActiveModel has_secure_password
diff --git a/Gemfile.lock b/Gemfile.lock
index 372d6ff..f5fc536 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,6 +28,8 @@ GEM
     activesupport (3.2.6)
       i18n (~> 0.6)
       multi_json (~> 1.0)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (3.0.2)
     bcrypt-ruby (3.0.1)
     bootstrap-sass (2.0.0)
@@ -48,8 +50,10 @@ GEM
       orm_adapter (~> 0.1)
       railties (~> 3.1)
       warden (~> 1.2.1)
-    dragonfly (0.9.12)
-      rack
+    dragonfly (1.4.0)
+      addressable (~> 2.3)
+      multi_json (~> 1.0)
+      rack (>= 1.3)
     erubis (2.7.0)
     execjs (1.4.0)
       multi_json (~> 1.0)
@@ -92,7 +96,8 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.3.1)
-    rack (1.4.1)
+    public_suffix (4.0.6)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-ssl (1.3.2)
@@ -155,7 +160,7 @@ DEPENDENCIES
   bson_ext
   coffee-rails (~> 3.2.1)
   devise
-  dragonfly (~> 0.9.12)
+  dragonfly (~> 1.4.0)
   jquery-rails
   kaminari
   mongoid (= 2.4.12)