diff --git a/Gemfile.lock b/Gemfile.lock
index 6bafdef..a4b9330 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,20 +38,23 @@ GEM
       tzinfo (~> 1.1)
     ansi (1.5.0)
     arel (6.0.3)
-    builder (3.2.2)
+    builder (3.2.3)
     concurrent-ruby (1.0.0)
+    crass (1.0.5)
     erubis (2.7.0)
-    globalid (0.3.6)
-      activesupport (>= 4.1.0)
-    i18n (0.7.0)
-    json (1.8.3)
-    loofah (2.0.3)
+    globalid (0.4.2)
+      activesupport (>= 4.2.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    json (1.8.6)
+    loofah (2.3.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.6.3)
-      mime-types (>= 1.16, < 3)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
     metaclass (0.0.4)
-    mime-types (2.99)
-    mini_portile2 (2.0.0)
+    mini_mime (1.0.2)
+    mini_portile2 (2.4.0)
     minitest (5.8.3)
     minitest-reporters (1.1.7)
       ansi
@@ -60,9 +63,9 @@ GEM
       ruby-progressbar
     mocha (1.1.0)
       metaclass (~> 0.0.1)
-    nokogiri (1.6.7.1)
-      mini_portile2 (~> 2.0.0.rc2)
-    rack (1.6.4)
+    nokogiri (1.10.4)
+      mini_portile2 (~> 2.4.0)
+    rack (1.6.11)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.5)
@@ -78,12 +81,12 @@ GEM
       sprockets-rails
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.7)
-      activesupport (>= 4.2.0.beta, < 5.0)
-      nokogiri (~> 1.6.0)
+    rails-dom-testing (1.0.9)
+      activesupport (>= 4.2.0, < 5.0)
+      nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.2)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
     railties (4.2.5)
       actionpack (= 4.2.5)
       activesupport (= 4.2.5)
@@ -106,8 +109,8 @@ GEM
       sprockets (>= 3.0.0)
     sqlite3 (1.3.11)
     thor (0.19.1)
-    thread_safe (0.3.5)
-    tzinfo (1.2.2)
+    thread_safe (0.3.6)
+    tzinfo (1.2.5)
       thread_safe (~> 0.1)
 
 PLATFORMS