diff --git a/Gemfile b/Gemfile
index 8a6a9d8e..8a51ee8c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -30,7 +30,7 @@ gem "jbuilder"
 gem 'redis'
 
 # bundle exec rake doc:rails generates the API under doc/api.
-gem "sdoc", group: :doc
+gem "sdoc", ">= 1.0.0", group: :doc
 
 # Use ActiveModel has_secure_password
 # gem "bcrypt", "~> 3.1.7"
@@ -92,10 +92,10 @@ group :development, :test do
 end
 
 group :test  do
-  gem "coveralls", require: false
+  gem "coveralls", ">= 0.8.15", require: false
   gem "capybara"
   gem "capybara-screenshot"
-  gem "capybara-webkit"
+  gem "capybara-webkit", ">= 1.11.1"
   gem "chromedriver-helper"
   gem "database_cleaner"
   gem "generator_spec"
diff --git a/Gemfile.lock b/Gemfile.lock
index 251d1bb5..2a580723 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,8 +38,8 @@ GEM
       i18n (~> 0.7)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.0)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     archive-zip (0.7.0)
       io-like (~> 0.3.0)
     arel (7.1.4)
@@ -55,18 +55,18 @@ GEM
       bundler (~> 1.2)
       thor (~> 0.18)
     byebug (9.0.6)
-    capybara (2.7.1)
+    capybara (2.18.0)
       addressable
-      mime-types (>= 1.16)
+      mini_mime (>= 0.1.3)
       nokogiri (>= 1.3.3)
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
-      xpath (~> 2.0)
+      xpath (>= 2.0, < 4.0)
     capybara-screenshot (1.0.14)
       capybara (>= 1.0, < 3)
       launchy
-    capybara-webkit (1.11.1)
-      capybara (>= 2.3.0, < 2.8.0)
+    capybara-webkit (1.15.1)
+      capybara (>= 2.3, < 4.0)
       json
     childprocess (0.5.9)
       ffi (~> 1.0, >= 1.0.11)
@@ -84,16 +84,16 @@ GEM
     coffee-script-source (1.10.0)
     concurrent-ruby (1.0.5)
     connection_pool (2.2.1)
-    coveralls (0.8.15)
+    coveralls (0.8.23)
       json (>= 1.8, < 3)
-      simplecov (~> 0.12.0)
+      simplecov (~> 0.16.1)
       term-ansicolor (~> 1.3)
-      thor (~> 0.19.1)
-      tins (>= 1.6.0, < 2)
+      thor (>= 0.19.4, < 2.0)
+      tins (~> 1.6)
     database_cleaner (1.5.3)
     debug_inspector (0.0.2)
     diff-lcs (1.2.5)
-    docile (1.1.5)
+    docile (1.3.2)
     erubis (2.7.0)
     execjs (2.7.0)
     factory_girl (4.7.0)
@@ -115,7 +115,7 @@ GEM
     jbuilder (2.6.0)
       activesupport (>= 3.0.0, < 5.1)
       multi_json (~> 1.2)
-    json (1.8.3)
+    json (2.3.0)
     launchy (2.4.3)
       addressable (~> 2.3)
     libv8 (5.3.332.38.1)
@@ -128,17 +128,18 @@ GEM
     mail (2.6.4)
       mime-types (>= 1.16, < 4)
     method_source (0.8.2)
-    mime-types (3.1)
+    mime-types (3.3.1)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
-    mini_portile2 (2.1.0)
+    mime-types-data (3.2020.0425)
+    mini_mime (1.0.2)
+    mini_portile2 (2.4.0)
     mini_racer (0.1.7)
       libv8 (~> 5.3)
     minitest (5.10.1)
     multi_json (1.12.1)
     nio4r (1.2.1)
-    nokogiri (1.7.0.1)
-      mini_portile2 (~> 2.1.0)
+    nokogiri (1.10.9)
+      mini_portile2 (~> 2.4.0)
     parser (2.3.2.0)
       ast (~> 2.2)
     pg (0.19.0)
@@ -165,9 +166,9 @@ GEM
     pry-stack_explorer (0.4.9.2)
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
-    public_suffix (2.0.5)
+    public_suffix (4.0.4)
     puma (3.6.2)
-    rack (2.0.1)
+    rack (2.2.2)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.1)
@@ -198,7 +199,7 @@ GEM
     rb-fsevent (0.9.8)
     rb-inotify (0.9.7)
       ffi (>= 0.5.0)
-    rdoc (4.3.0)
+    rdoc (6.2.0)
     react_on_rails (6.7.1)
       addressable
       connection_pool
@@ -247,18 +248,17 @@ GEM
     scss_lint (0.50.3)
       rake (>= 0.9, < 12)
       sass (~> 3.4.20)
-    sdoc (0.4.2)
-      json (~> 1.7, >= 1.7.7)
-      rdoc (~> 4.0)
+    sdoc (1.1.0)
+      rdoc (>= 5.0)
     selenium-webdriver (2.53.4)
       childprocess (~> 0.5)
       rubyzip (~> 1.0)
       websocket (~> 1.0)
-    simplecov (0.12.0)
-      docile (~> 1.1.0)
+    simplecov (0.16.1)
+      docile (~> 1.1)
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
-    simplecov-html (0.10.0)
+    simplecov-html (0.10.2)
     slop (3.6.0)
     spring (2.0.0)
       activesupport (>= 4.2)
@@ -271,12 +271,14 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    term-ansicolor (1.4.0)
+    sync (0.5.0)
+    term-ansicolor (1.7.1)
       tins (~> 1.0)
     thor (0.19.4)
     thread_safe (0.3.6)
     tilt (2.0.5)
-    tins (1.12.0)
+    tins (1.24.1)
+      sync
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
     uglifier (3.0.3)
@@ -291,8 +293,8 @@ GEM
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.2)
-    xpath (2.0.0)
-      nokogiri (~> 1.3)
+    xpath (3.2.0)
+      nokogiri (~> 1.8)
     yard (0.9.5)
 
 PLATFORMS
@@ -305,10 +307,10 @@ DEPENDENCIES
   bundler-audit
   capybara
   capybara-screenshot
-  capybara-webkit
+  capybara-webkit (>= 1.11.1)
   chromedriver-helper
   coffee-rails
-  coveralls
+  coveralls (>= 0.8.15)
   database_cleaner
   factory_girl_rails
   foreman
@@ -337,7 +339,7 @@ DEPENDENCIES
   ruby-lint
   sass-rails
   scss_lint
-  sdoc
+  sdoc (>= 1.0.0)
   selenium-webdriver (< 3.0.0)
   spring
   spring-commands-rspec
@@ -348,4 +350,4 @@ RUBY VERSION
    ruby 2.3.1p112
 
 BUNDLED WITH
-   1.13.6
+   1.17.3