diff --git a/Gemfile b/Gemfile
index 86853f15..c652b5c2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -18,4 +18,5 @@ group :development do
   gem 'guard-rack'
   gem 'guard-ronn'
   gem 'guard-rake'
+  gem 'delorean'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 312e08d0..5ce85678 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,6 +29,7 @@ GEM
       xpath (~> 1.0.0)
     childprocess (0.3.8)
       ffi (~> 1.0, >= 1.0.11)
+    chronic (0.10.1)
     coderay (1.0.9)
     colorize (0.5.8)
     cucumber (1.3.2)
@@ -36,6 +37,8 @@ GEM
       diff-lcs (>= 1.1.3)
       gherkin (~> 2.12.0)
       multi_json (~> 1.3)
+    delorean (2.1.0)
+      chronic
     diff-lcs (1.2.4)
     errand (0.8.0)
       rrd-ffi (= 0.2.13)
@@ -149,6 +152,7 @@ DEPENDENCIES
   capybara
   colorize
   cucumber
+  delorean
   guard
   guard-rack
   guard-rake