diff --git a/Gemfile.lock b/Gemfile.lock
index da451b4..2193e4c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,19 +30,17 @@ GEM
       activesupport (= 3.1.0)
     activesupport (3.1.0)
       multi_json (~> 1.0)
-    addressable (2.2.6)
+    addressable (2.2.8)
     arel (2.2.1)
     bcrypt-ruby (3.0.1)
     builder (3.0.0)
-    capybara (1.1.1)
-      mime-types (>= 1.16)
+    capybara (2.18.0)
+      addressable
+      mini_mime (>= 0.1.3)
       nokogiri (>= 1.3.3)
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
-      selenium-webdriver (~> 2.0)
-      xpath (~> 0.1.4)
-    childprocess (0.2.2)
-      ffi (~> 1.0.6)
+      xpath (>= 2.0, < 4.0)
     coffee-rails (3.1.1)
       coffee-script (>= 2.2.0)
       railties (~> 3.1.0)
@@ -73,21 +71,16 @@ GEM
     factory_girl_rails (1.2.0)
       factory_girl (~> 2.1.0)
       railties (>= 3.0.0)
-    ffi (1.0.9)
+    ffi (1.11.1)
     gherkin (2.4.18)
       json (>= 1.4.6)
-    heroku (2.7.0)
-      launchy (>= 0.3.2)
-      rest-client (~> 1.6.1)
-      rubyzip
-      term-ansicolor (~> 1.0.5)
+    heroku (3.99.4)
     hike (1.2.1)
     i18n (0.6.0)
     jquery-rails (1.0.19)
       railties (~> 3.0)
       thor (~> 0.14)
     json (1.6.0)
-    json_pure (1.6.0)
     launchy (2.0.5)
       addressable (~> 2.2.6)
     less (2.0.9)
@@ -103,20 +96,23 @@ GEM
       i18n (>= 0.4.0)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
-    mime-types (1.16)
+    mime-types (1.25.1)
+    mini_mime (1.0.2)
+    mini_portile2 (2.4.0)
     multi_json (1.0.4)
-    nokogiri (1.5.0)
+    nokogiri (1.10.4)
+      mini_portile2 (~> 2.4.0)
     pg (0.11.0)
     pie (0.2.13)
     polyglot (0.3.2)
-    rack (1.3.6)
+    rack (1.3.10)
     rack-cache (1.0.3)
       rack (>= 0.4)
     rack-mount (0.8.3)
       rack (>= 1.0.0)
     rack-ssl (1.3.2)
       rack
-    rack-test (0.6.1)
+    rack-test (0.6.3)
       rack (>= 1.0)
     rails (3.1.0)
       actionmailer (= 3.1.0)
@@ -136,8 +132,8 @@ GEM
     rake (0.9.2.2)
     rdoc (3.12)
       json (~> 1.4)
-    rest-client (1.6.7)
-      mime-types (>= 1.16)
+    rest-client (1.6.14)
+      mime-types (~> 1.16)
     rspec (2.6.0)
       rspec-core (~> 2.6.0)
       rspec-expectations (~> 2.6.0)
@@ -151,7 +147,6 @@ GEM
       activesupport (~> 3.0)
       railties (~> 3.0)
       rspec (~> 2.6.0)
-    rubyzip (0.9.4)
     sass (3.1.7)
     sass-rails (3.1.2)
       actionpack (~> 3.1.0)
@@ -159,11 +154,6 @@ GEM
       sass (>= 3.1.4)
       sprockets (~> 2.0.0)
       tilt (~> 1.3.2)
-    selenium-webdriver (2.6.0)
-      childprocess (>= 0.2.1)
-      ffi (>= 1.0.7)
-      json_pure
-      rubyzip
     sequel (3.20.0)
     sinatra (1.0)
       rack (>= 1.0)
@@ -180,7 +170,8 @@ GEM
       sequel (~> 3.20.0)
       sinatra (~> 1.0.0)
       sqlite3-ruby (~> 1.2)
-    term-ansicolor (1.0.6)
+    term-ansicolor (1.7.1)
+      tins (~> 1.0)
     therubyracer (0.9.9)
       libv8 (~> 3.3.10)
     thin (1.2.11)
@@ -189,6 +180,7 @@ GEM
       rack (>= 1.0.0)
     thor (0.14.6)
     tilt (1.3.3)
+    tins (1.21.1)
     treetop (1.4.10)
       polyglot
       polyglot (>= 0.3.1)
@@ -196,8 +188,8 @@ GEM
     uglifier (1.0.3)
       execjs (>= 0.3.0)
       multi_json (>= 1.0.2)
-    xpath (0.1.4)
-      nokogiri (~> 1.3)
+    xpath (3.2.0)
+      nokogiri (~> 1.8)
 
 PLATFORMS
   ruby