diff --git a/Gemfile.lock b/Gemfile.lock
index 58e26dc..7b50cea 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,98 +2,101 @@ PATH
   remote: .
   specs:
     cacheable (0.0.1)
-      rails (~> 4.2)
       request_store
 
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (4.2.7)
-      actionpack (= 4.2.7)
-      actionview (= 4.2.7)
-      activejob (= 4.2.7)
+    actioncable (5.0.7.2)
+      actionpack (= 5.0.7.2)
+      nio4r (>= 1.2, < 3.0)
+      websocket-driver (~> 0.6.1)
+    actionmailer (5.0.7.2)
+      actionpack (= 5.0.7.2)
+      actionview (= 5.0.7.2)
+      activejob (= 5.0.7.2)
       mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.7)
-      actionview (= 4.2.7)
-      activesupport (= 4.2.7)
-      rack (~> 1.6)
-      rack-test (~> 0.6.2)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-dom-testing (~> 2.0)
+    actionpack (5.0.7.2)
+      actionview (= 5.0.7.2)
+      activesupport (= 5.0.7.2)
+      rack (~> 2.0)
+      rack-test (~> 0.6.3)
+      rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (4.2.7)
-      activesupport (= 4.2.7)
+    actionview (5.0.7.2)
+      activesupport (= 5.0.7.2)
       builder (~> 3.1)
       erubis (~> 2.7.0)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    activejob (4.2.7)
-      activesupport (= 4.2.7)
-      globalid (>= 0.3.0)
-    activemodel (4.2.7)
-      activesupport (= 4.2.7)
-      builder (~> 3.1)
-    activerecord (4.2.7)
-      activemodel (= 4.2.7)
-      activesupport (= 4.2.7)
-      arel (~> 6.0)
-    activesupport (4.2.7)
-      i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activejob (5.0.7.2)
+      activesupport (= 5.0.7.2)
+      globalid (>= 0.3.6)
+    activemodel (5.0.7.2)
+      activesupport (= 5.0.7.2)
+    activerecord (5.0.7.2)
+      activemodel (= 5.0.7.2)
+      activesupport (= 5.0.7.2)
+      arel (~> 7.0)
+    activesupport (5.0.7.2)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    arel (6.0.3)
-    builder (3.2.2)
-    concurrent-ruby (1.0.2)
+    arel (7.1.4)
+    builder (3.2.4)
+    concurrent-ruby (1.1.10)
+    crass (1.0.6)
     diff-lcs (1.2.5)
     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 (1.0.0)
+      activesupport (>= 5.0)
+    i18n (1.10.0)
+      concurrent-ruby (~> 1.0)
+    loofah (2.18.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.6.4)
-      mime-types (>= 1.16, < 4)
-    mime-types (3.1)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
-    mini_portile2 (2.1.0)
-    minitest (5.9.0)
-    nokogiri (1.6.8)
-      mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
-    pkg-config (1.1.7)
-    rack (1.6.4)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
+    method_source (1.0.0)
+    mini_mime (1.1.2)
+    mini_portile2 (2.8.0)
+    minitest (5.16.0)
+    nio4r (2.5.8)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    racc (1.6.0)
+    rack (2.2.3.1)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.7)
-      actionmailer (= 4.2.7)
-      actionpack (= 4.2.7)
-      actionview (= 4.2.7)
-      activejob (= 4.2.7)
-      activemodel (= 4.2.7)
-      activerecord (= 4.2.7)
-      activesupport (= 4.2.7)
-      bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.7)
-      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-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
-    railties (4.2.7)
-      actionpack (= 4.2.7)
-      activesupport (= 4.2.7)
+    rails (5.0.7.2)
+      actioncable (= 5.0.7.2)
+      actionmailer (= 5.0.7.2)
+      actionpack (= 5.0.7.2)
+      actionview (= 5.0.7.2)
+      activejob (= 5.0.7.2)
+      activemodel (= 5.0.7.2)
+      activerecord (= 5.0.7.2)
+      activesupport (= 5.0.7.2)
+      bundler (>= 1.3.0)
+      railties (= 5.0.7.2)
+      sprockets-rails (>= 2.0.0)
+    rails-dom-testing (2.0.3)
+      activesupport (>= 4.2.0)
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.4.3)
+      loofah (~> 2.3)
+    railties (5.0.7.2)
+      actionpack (= 5.0.7.2)
+      activesupport (= 5.0.7.2)
+      method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (11.2.2)
-    request_store (1.3.1)
+    rake (13.0.6)
+    request_store (1.5.1)
+      rack (>= 1.4)
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
       rspec-expectations (~> 3.5.0)
@@ -107,23 +110,27 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.5.0)
     rspec-support (3.5.0)
-    sprockets (3.6.3)
+    sprockets (4.0.3)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    sprockets-rails (3.1.1)
+    sprockets-rails (3.2.2)
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
     sqlite3 (1.3.11)
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tzinfo (1.2.2)
+    thor (1.2.1)
+    thread_safe (0.3.6)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
+    websocket-driver (0.6.5)
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.5)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   cacheable!
+  rails (~> 5.0.0)
   rspec
   sqlite3