diff --git a/Gemfile b/Gemfile
index 7e37cd83b..7aa5dc465 100644
--- a/Gemfile
+++ b/Gemfile
@@ -18,6 +18,7 @@ gem "uglifier"
 gem 'coffee-rails'
 gem "therubyracer", :platforms => :ruby
 gem "pry", :group => [:test, :development]
+gem "pry-debugger", :group => [:test, :development]
 gem "rails", "~> 4.1.5"
 gem "pg"
 gem "kgio"
diff --git a/Gemfile.lock b/Gemfile.lock
index c28646ba0..ab92e44d8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,10 +69,17 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.7.0)
+    columnize (0.8.9)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
     daemons (1.1.9)
     dalli (2.7.0)
+    debugger (1.6.8)
+      columnize (>= 0.3.1)
+      debugger-linecache (~> 1.2.0)
+      debugger-ruby_core_source (~> 1.3.5)
+    debugger-linecache (1.2.0)
+    debugger-ruby_core_source (1.3.5)
     delayed_job (4.0.1)
       activesupport (>= 3.0, < 4.2)
     delayed_job_active_record (4.0.1)
@@ -136,6 +143,9 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
+    pry-debugger (0.2.3)
+      debugger (~> 1.3)
+      pry (>= 0.9.10, < 0.11.0)
     rack (1.5.2)
     rack-test (0.6.2)
       rack (>= 1.0)
@@ -259,6 +269,7 @@ DEPENDENCIES
   pg
   protected_attributes
   pry
+  pry-debugger
   radix62 (~> 1.0.1)
   rails (~> 4.1.5)
   rmagick
diff --git a/app/models/upload.rb b/app/models/upload.rb
index ca04eb075..238ee71c1 100644
--- a/app/models/upload.rb
+++ b/app/models/upload.rb
@@ -91,7 +91,7 @@ class Upload < ActiveRecord::Base
       CurrentUser.scoped(uploader, uploader_ip_addr) do
         update_attribute(:status, "processing")
         if is_downloadable?
-          download_from_source(temp_file_path)
+          self.source = download_from_source(temp_file_path)
         end
         validate_file_exists
         self.content_type = file_header_to_content_type(file_path)
@@ -366,6 +366,7 @@ class Upload < ActiveRecord::Base
       download = Downloads::File.new(source, destination_path)
       download.download!
       ugoira_service.load(download.data)
+      download.source
     end
   end
 
diff --git a/test/unit/upload_test.rb b/test/unit/upload_test.rb
index 44412016e..2c747f61f 100644
--- a/test/unit/upload_test.rb
+++ b/test/unit/upload_test.rb
@@ -221,6 +221,7 @@ class UploadTest < ActiveSupport::TestCase
         end
 
         post = Post.last
+        assert_equal("http://www.google.com/intl/en_ALL/images/logo.gif", post.source)
         assert_equal("foo hoge lowres", post.tag_string)
         assert_equal("s", post.rating)
         assert_equal(@upload.uploader_id, post.uploader_id)
@@ -251,6 +252,7 @@ class UploadTest < ActiveSupport::TestCase
         assert_equal("0d94800c4b520bf3d8adda08f95d31e2", post.md5)
         assert_equal(60, post.image_width)
         assert_equal(60, post.image_height)
+        assert_equal("http://i1.pixiv.net/img-zip-ugoira/img/2014/10/05/23/42/23/46378654_ugoira1920x1080.zip", post.source)
         assert_operator(File.size(post.large_file_path), :>, 0)
         assert_operator(File.size(post.preview_file_path), :>, 0)            
       end