diff --git a/Gemfile b/Gemfile
index 3b7011cb4..9f4b8c100 100644
--- a/Gemfile
+++ b/Gemfile
@@ -37,7 +37,7 @@ gem 'daemons'
 gem 'net-ssh'
 gem 'net-sftp'
 gem 'term-ansicolor', :require => "term/ansicolor"
-gem 'diff-lcs', :require => "diff/lcs/array"
+gem 'diff-lcs', :require => "diff/lcs/array", :git => "https://github.com/halostatue/diff-lcs.git"
 gem 'bcrypt-ruby', :require => "bcrypt"
 gem 'awesome_print'
 gem 'statistics2'
diff --git a/Gemfile.lock b/Gemfile.lock
index f2f8d2d84..9078b45d0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,3 +1,9 @@
+GIT
+  remote: https://github.com/halostatue/diff-lcs.git
+  revision: ff796c262db5a22f14b4765c09655b4faccc132a
+  specs:
+    diff-lcs (1.3)
+
 GIT
   remote: https://github.com/r888888888/ruby-imagespec.git
   revision: 2dab9811f4abb4fbaeea66feb42e388ba545b2d8
@@ -92,7 +98,6 @@ GEM
     delayed_job_active_record (4.0.1)
       activerecord (>= 3.0, < 4.2)
       delayed_job (>= 3.0, < 4.1)
-    diff-lcs (1.2.5)
     docile (1.1.3)
     domain_name (0.5.18)
       unf (>= 0.0.5, < 1.0.0)
@@ -321,7 +326,7 @@ DEPENDENCIES
   dalli
   delayed_job
   delayed_job_active_record
-  diff-lcs
+  diff-lcs!
   factory_girl
   ffaker
   gctools