diff --git a/Gemfile b/Gemfile
index 2a0f2ff..d43e62d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,19 +2,19 @@ source 'https://rubygems.org'
 ruby '1.9.3'
 #ruby-gemset=railstutorial_rails_4_0
 
-gem 'rails', '6.0.3.5'
+gem 'rails', '7.0.0'
 
 group :development do
   gem 'sqlite3', '1.3.8'
 end
 
-gem 'sass-rails', '5.0.8'
-gem 'uglifier', '2.1.1'
+gem 'sass-rails', '6.0.0'
+gem 'uglifier', '2.7.2'
 gem 'coffee-rails', '4.2.2'
-gem 'jquery-rails', '4.0.1'
-gem 'turbolinks', '1.1.1'
-gem 'jbuilder', '1.0.2'
+gem 'jquery-rails', '4.4.0'
+gem 'turbolinks', '5.0.0'
+gem 'jbuilder', '1.2.0'
 
 group :doc do
-  gem 'sdoc', '0.3.20', require: false
+  gem 'sdoc', '1.0.0', require: false
 end
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
index 89568fa..fccaeec 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,118 +1,223 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (4.0.2)
-      actionpack (= 4.0.2)
-      mail (~> 2.5.4)
-    actionpack (4.0.2)
-      activesupport (= 4.0.2)
-      builder (~> 3.1.0)
-      erubis (~> 2.7.0)
-      rack (~> 1.5.2)
-      rack-test (~> 0.6.2)
-    activemodel (4.0.2)
-      activesupport (= 4.0.2)
-      builder (~> 3.1.0)
-    activerecord (4.0.2)
-      activemodel (= 4.0.2)
-      activerecord-deprecated_finders (~> 1.0.2)
-      activesupport (= 4.0.2)
-      arel (~> 4.0.0)
-    activerecord-deprecated_finders (1.0.3)
-    activesupport (4.0.2)
-      i18n (~> 0.6, >= 0.6.4)
-      minitest (~> 4.2)
-      multi_json (~> 1.3)
-      thread_safe (~> 0.1)
-      tzinfo (~> 0.3.37)
-    arel (4.0.1)
-    atomic (1.1.14)
-    builder (3.1.4)
-    coffee-rails (4.0.1)
+    actioncable (7.0.0)
+      actionpack (= 7.0.0)
+      activesupport (= 7.0.0)
+      nio4r (~> 2.0)
+      websocket-driver (>= 0.6.1)
+    actionmailbox (7.0.0)
+      actionpack (= 7.0.0)
+      activejob (= 7.0.0)
+      activerecord (= 7.0.0)
+      activestorage (= 7.0.0)
+      activesupport (= 7.0.0)
+      mail (>= 2.7.1)
+    actionmailer (7.0.0)
+      actionpack (= 7.0.0)
+      actionview (= 7.0.0)
+      activejob (= 7.0.0)
+      activesupport (= 7.0.0)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 2.0)
+    actionpack (7.0.0)
+      actionview (= 7.0.0)
+      activesupport (= 7.0.0)
+      rack (~> 2.0, >= 2.2.0)
+      rack-test (>= 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.2.0)
+    actiontext (7.0.0)
+      actionpack (= 7.0.0)
+      activerecord (= 7.0.0)
+      activestorage (= 7.0.0)
+      activesupport (= 7.0.0)
+      globalid (>= 0.6.0)
+      nokogiri (>= 1.8.5)
+    actionview (7.0.0)
+      activesupport (= 7.0.0)
+      builder (~> 3.1)
+      erubi (~> 1.4)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.1, >= 1.2.0)
+    activejob (7.0.0)
+      activesupport (= 7.0.0)
+      globalid (>= 0.3.6)
+    activemodel (7.0.0)
+      activesupport (= 7.0.0)
+    activerecord (7.0.0)
+      activemodel (= 7.0.0)
+      activesupport (= 7.0.0)
+    activestorage (7.0.0)
+      actionpack (= 7.0.0)
+      activejob (= 7.0.0)
+      activerecord (= 7.0.0)
+      activesupport (= 7.0.0)
+      marcel (~> 1.0)
+      mini_mime (>= 1.1.0)
+    activesupport (7.0.0)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+    base64 (0.3.0)
+    builder (3.3.0)
+    cgi (0.5.1)
+    coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
-      railties (>= 4.0.0, < 5.0)
-    coffee-script (2.2.0)
+      railties (>= 4.0.0)
+    coffee-script (2.4.1)
       coffee-script-source
       execjs
-    coffee-script-source (1.6.3)
-    erubis (2.7.0)
-    execjs (2.0.2)
-    hike (1.2.3)
-    i18n (0.6.9)
-    jbuilder (1.0.2)
+    coffee-script-source (1.12.2)
+    concurrent-ruby (1.3.6)
+    crass (1.0.6)
+    date (3.5.1)
+    erb (4.0.4)
+      cgi (>= 0.3.3)
+    erubi (1.13.1)
+    execjs (2.10.0)
+    ffi (1.17.3-x86-mingw32)
+    ffi (1.17.3-x86_64-linux-gnu)
+    globalid (1.3.0)
+      activesupport (>= 6.1)
+    i18n (1.14.8)
+      concurrent-ruby (~> 1.0)
+    jbuilder (1.2.0)
       activesupport (>= 3.0.0)
-    jquery-rails (3.0.4)
-      railties (>= 3.0, < 5.0)
+    jquery-rails (4.4.0)
+      rails-dom-testing (>= 1, < 3)
+      railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.1)
-    mail (2.5.4)
-      mime-types (~> 1.16)
-      treetop (~> 1.4.8)
-    mime-types (1.25.1)
-    minitest (4.7.5)
-    multi_json (1.8.2)
-    polyglot (0.3.3)
-    rack (1.5.2)
-    rack-test (0.6.2)
-      rack (>= 1.0)
-    rails (4.0.2)
-      actionmailer (= 4.0.2)
-      actionpack (= 4.0.2)
-      activerecord (= 4.0.2)
-      activesupport (= 4.0.2)
-      bundler (>= 1.3.0, < 2.0)
-      railties (= 4.0.2)
-      sprockets-rails (~> 2.0.0)
-    railties (4.0.2)
-      actionpack (= 4.0.2)
-      activesupport (= 4.0.2)
-      rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
-    rake (10.1.0)
-    rdoc (3.12.2)
-      json (~> 1.4)
-    sass (3.2.12)
-    sass-rails (4.0.1)
-      railties (>= 4.0.0, < 5.0)
-      sass (>= 3.1.10)
-      sprockets-rails (~> 2.0.0)
-    sdoc (0.3.20)
-      json (>= 1.1.3)
-      rdoc (~> 3.10)
-    sprockets (2.10.1)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
-    sprockets-rails (2.0.1)
-      actionpack (>= 3.0)
-      activesupport (>= 3.0)
-      sprockets (~> 2.8)
+    json (2.18.1)
+    logger (1.7.0)
+    loofah (2.25.0)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.12.0)
+    mail (2.9.0)
+      logger
+      mini_mime (>= 0.1.1)
+      net-imap
+      net-pop
+      net-smtp
+    marcel (1.1.0)
+    method_source (1.1.0)
+    mini_mime (1.1.5)
+    mini_portile2 (2.8.9)
+    minitest (5.27.0)
+    net-imap (0.5.13)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.2)
+      timeout
+    net-smtp (0.5.1)
+      net-protocol
+    nio4r (2.7.5)
+    nokogiri (1.18.10)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
+    nokogiri (1.18.10-x86_64-linux-gnu)
+      racc (~> 1.4)
+    psych (5.3.1)
+      date
+      stringio
+    racc (1.8.1)
+    rack (2.2.21)
+    rack-test (2.2.0)
+      rack (>= 1.3)
+    rails (7.0.0)
+      actioncable (= 7.0.0)
+      actionmailbox (= 7.0.0)
+      actionmailer (= 7.0.0)
+      actionpack (= 7.0.0)
+      actiontext (= 7.0.0)
+      actionview (= 7.0.0)
+      activejob (= 7.0.0)
+      activemodel (= 7.0.0)
+      activerecord (= 7.0.0)
+      activestorage (= 7.0.0)
+      activesupport (= 7.0.0)
+      bundler (>= 1.15.0)
+      railties (= 7.0.0)
+    rails-dom-testing (2.3.0)
+      activesupport (>= 5.0.0)
+      minitest
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.6.2)
+      loofah (~> 2.21)
+      nokogiri (>= 1.15.7, != 1.16.7, != 1.16.6, != 1.16.5, != 1.16.4, != 1.16.3, != 1.16.2, != 1.16.1, != 1.16.0.rc1, != 1.16.0)
+    railties (7.0.0)
+      actionpack (= 7.0.0)
+      activesupport (= 7.0.0)
+      method_source
+      rake (>= 12.2)
+      thor (~> 1.0)
+      zeitwerk (~> 2.5)
+    rake (13.3.1)
+    rdoc (7.1.0)
+      erb
+      psych (>= 4.0.0)
+      tsort
+    sass-rails (6.0.0)
+      sassc-rails (~> 2.1, >= 2.1.1)
+    sassc (2.4.0)
+      ffi (~> 1.9)
+    sassc-rails (2.1.2)
+      railties (>= 4.0.0)
+      sassc (>= 2.0)
+      sprockets (> 3.0)
+      sprockets-rails
+      tilt
+    sdoc (1.0.0)
+      rdoc (>= 5.0)
+    sprockets (4.2.2)
+      concurrent-ruby (~> 1.0)
+      logger
+      rack (>= 2.2.4, < 4)
+    sprockets-rails (3.5.2)
+      actionpack (>= 6.1)
+      activesupport (>= 6.1)
+      sprockets (>= 3.0.0)
+    sqlite3 (1.3.8)
     sqlite3 (1.3.8-x86-mingw32)
-    thor (0.18.1)
-    thread_safe (0.1.3)
-      atomic
-    tilt (1.4.1)
-    treetop (1.4.15)
-      polyglot
-      polyglot (>= 0.3.1)
-    turbolinks (1.1.1)
-      coffee-rails
-    tzinfo (0.3.38)
-    uglifier (2.1.1)
+    stringio (3.2.0)
+    thor (1.5.0)
+    tilt (2.7.0)
+    timeout (0.6.0)
+    tsort (0.2.0)
+    turbolinks (5.0.0)
+      turbolinks-source (~> 5)
+    turbolinks-source (5.2.0)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
+    uglifier (2.7.2)
       execjs (>= 0.3.0)
-      multi_json (~> 1.0, >= 1.0.2)
+      json (>= 1.8.0)
+    websocket-driver (0.8.0)
+      base64
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.5)
+    zeitwerk (2.6.18)
 
 PLATFORMS
   x86-mingw32
+  x86_64-linux
 
 DEPENDENCIES
-  coffee-rails (= 4.0.1)
-  jbuilder (= 1.0.2)
-  jquery-rails (= 3.0.4)
-  rails (= 4.0.2)
-  sass-rails (= 4.0.1)
-  sdoc (= 0.3.20)
+  coffee-rails (= 4.2.2)
+  jbuilder (= 1.2.0)
+  jquery-rails (= 4.4.0)
+  rails (= 7.0.0)
+  sass-rails (= 6.0.0)
+  sdoc (= 1.0.0)
   sqlite3 (= 1.3.8)
-  turbolinks (= 1.1.1)
-  uglifier (= 2.1.1)
+  turbolinks (= 5.0.0)
+  uglifier (= 2.7.2)
+
+RUBY VERSION
+   ruby 3.1.7p261
+
+BUNDLED WITH
+   2.3.27