diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index ca4674a..e142e61 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -31,15 +31,10 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.2
+          ruby-version: 3.3
           bundler-cache: true
       - name: Run tests
         run: |
           bundle exec rails zeitwerk:check
           bundle exec rails db:migrate
           bundle exec rspec
-      - name: Report coverage
-        if: ${{ github.event_name == 'pull_request' }}
-        uses: romeovs/lcov-reporter-action@v0.3.1
-        with:
-          lcov-file: ./coverage/lcov/shiori.lcov
diff --git a/.tool-versions b/.tool-versions
index f2a971a..1dd1998 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-ruby 3.2.2
+ruby 3.3.5
diff --git a/Gemfile b/Gemfile
index 297c384..d3a0e7a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,6 @@
 source "https://rubygems.org"
-git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby "~> 3.2"
+ruby "~> 3.3"
 
 # Rails
 gem "rails", "~> 7.0"
@@ -42,8 +41,6 @@ group :development, :test do
   gem "faker"
   gem "timecop"
   gem "simplecov", require: false
-  # lcov files generated by simplecov-lcov are missing LF and LH fields, which are required by simplecov reporter
-  gem "simplecov-lcov", require: false, github: 't-mario-y/simplecov-lcov', branch: 'feature/write-LF-LH'
 end
 
 group :development do
diff --git a/Gemfile.lock b/Gemfile.lock
index ee58482..29d4532 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,87 +1,76 @@
-GIT
-  remote: https://github.com/t-mario-y/simplecov-lcov.git
-  revision: 476dafefe58047ff7820882d829e71df200ad573
-  branch: feature/write-LF-LH
-  specs:
-    simplecov-lcov (0.8.0)
-
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (7.1.2)
-      actionpack (= 7.1.2)
-      activesupport (= 7.1.2)
+    actioncable (7.2.1)
+      actionpack (= 7.2.1)
+      activesupport (= 7.2.1)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
       zeitwerk (~> 2.6)
-    actionmailbox (7.1.2)
-      actionpack (= 7.1.2)
-      activejob (= 7.1.2)
-      activerecord (= 7.1.2)
-      activestorage (= 7.1.2)
-      activesupport (= 7.1.2)
-      mail (>= 2.7.1)
-      net-imap
-      net-pop
-      net-smtp
-    actionmailer (7.1.2)
-      actionpack (= 7.1.2)
-      actionview (= 7.1.2)
-      activejob (= 7.1.2)
-      activesupport (= 7.1.2)
-      mail (~> 2.5, >= 2.5.4)
-      net-imap
-      net-pop
-      net-smtp
+    actionmailbox (7.2.1)
+      actionpack (= 7.2.1)
+      activejob (= 7.2.1)
+      activerecord (= 7.2.1)
+      activestorage (= 7.2.1)
+      activesupport (= 7.2.1)
+      mail (>= 2.8.0)
+    actionmailer (7.2.1)
+      actionpack (= 7.2.1)
+      actionview (= 7.2.1)
+      activejob (= 7.2.1)
+      activesupport (= 7.2.1)
+      mail (>= 2.8.0)
       rails-dom-testing (~> 2.2)
-    actionpack (7.1.2)
-      actionview (= 7.1.2)
-      activesupport (= 7.1.2)
+    actionpack (7.2.1)
+      actionview (= 7.2.1)
+      activesupport (= 7.2.1)
       nokogiri (>= 1.8.5)
       racc
-      rack (>= 2.2.4)
+      rack (>= 2.2.4, < 3.2)
       rack-session (>= 1.0.1)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
-    actiontext (7.1.2)
-      actionpack (= 7.1.2)
-      activerecord (= 7.1.2)
-      activestorage (= 7.1.2)
-      activesupport (= 7.1.2)
+      useragent (~> 0.16)
+    actiontext (7.2.1)
+      actionpack (= 7.2.1)
+      activerecord (= 7.2.1)
+      activestorage (= 7.2.1)
+      activesupport (= 7.2.1)
       globalid (>= 0.6.0)
       nokogiri (>= 1.8.5)
-    actionview (7.1.2)
-      activesupport (= 7.1.2)
+    actionview (7.2.1)
+      activesupport (= 7.2.1)
       builder (~> 3.1)
       erubi (~> 1.11)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
-    activejob (7.1.2)
-      activesupport (= 7.1.2)
+    activejob (7.2.1)
+      activesupport (= 7.2.1)
       globalid (>= 0.3.6)
-    activemodel (7.1.2)
-      activesupport (= 7.1.2)
-    activerecord (7.1.2)
-      activemodel (= 7.1.2)
-      activesupport (= 7.1.2)
+    activemodel (7.2.1)
+      activesupport (= 7.2.1)
+    activerecord (7.2.1)
+      activemodel (= 7.2.1)
+      activesupport (= 7.2.1)
       timeout (>= 0.4.0)
-    activestorage (7.1.2)
-      actionpack (= 7.1.2)
-      activejob (= 7.1.2)
-      activerecord (= 7.1.2)
-      activesupport (= 7.1.2)
+    activestorage (7.2.1)
+      actionpack (= 7.2.1)
+      activejob (= 7.2.1)
+      activerecord (= 7.2.1)
+      activesupport (= 7.2.1)
       marcel (~> 1.0)
-    activesupport (7.1.2)
+    activesupport (7.2.1)
       base64
       bigdecimal
-      concurrent-ruby (~> 1.0, >= 1.0.2)
+      concurrent-ruby (~> 1.0, >= 1.3.1)
       connection_pool (>= 2.2.5)
       drb
       i18n (>= 1.6, < 2)
+      logger (>= 1.4.2)
       minitest (>= 5.1)
-      mutex_m
-      tzinfo (~> 2.0)
+      securerandom (>= 0.3)
+      tzinfo (~> 2.0, >= 2.0.5)
     android_key_attestation (0.3.0)
     awrence (1.2.1)
     base64 (0.2.0)
@@ -92,7 +81,7 @@ GEM
     builder (3.2.4)
     cbor (0.5.9.6)
     commonmarker (0.23.10)
-    concurrent-ruby (1.2.2)
+    concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     cose (1.3.0)
       cbor (~> 0.5.9)
@@ -107,10 +96,10 @@ GEM
     drb (2.2.0)
       ruby2_keywords
     erubi (1.12.0)
-    factory_bot (6.2.1)
+    factory_bot (6.5.0)
       activesupport (>= 5.0.0)
-    factory_bot_rails (6.2.0)
-      factory_bot (~> 6.2.0)
+    factory_bot_rails (6.4.3)
+      factory_bot (~> 6.4)
       railties (>= 5.0.0)
     faker (3.2.0)
       i18n (>= 1.8.11, < 2)
@@ -128,10 +117,11 @@ GEM
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     io-console (0.7.1)
-    irb (1.11.0)
-      rdoc
-      reline (>= 0.3.8)
+    irb (1.14.0)
+      rdoc (>= 4.0.0)
+      reline (>= 0.4.2)
     jwt (2.7.1)
+    logger (1.6.1)
     loofah (2.22.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
@@ -142,9 +132,9 @@ GEM
       net-smtp
     marcel (1.0.2)
     mini_mime (1.1.5)
-    minitest (5.20.0)
+    mini_portile2 (2.8.5)
+    minitest (5.25.1)
     msgpack (1.7.1)
-    mutex_m (0.2.0)
     net-imap (0.4.9)
       date
       net-protocol
@@ -156,9 +146,8 @@ GEM
       net-protocol
     newrelic_rpm (9.3.0)
     nio4r (2.7.0)
-    nokogiri (1.15.5-arm64-darwin)
-      racc (~> 1.4)
-    nokogiri (1.15.5-x86_64-linux)
+    nokogiri (1.16.7)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     openssl (3.1.0)
     openssl-signature_algorithm (1.3.0)
@@ -166,10 +155,10 @@ GEM
     pg (1.5.3)
     psych (5.1.2)
       stringio
-    puma (6.4.0)
+    puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.7.3)
-    rack (3.0.8)
+    rack (3.1.7)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
     rack-session (2.0.0)
@@ -179,20 +168,20 @@ GEM
     rackup (2.1.0)
       rack (>= 3)
       webrick (~> 1.8)
-    rails (7.1.2)
-      actioncable (= 7.1.2)
-      actionmailbox (= 7.1.2)
-      actionmailer (= 7.1.2)
-      actionpack (= 7.1.2)
-      actiontext (= 7.1.2)
-      actionview (= 7.1.2)
-      activejob (= 7.1.2)
-      activemodel (= 7.1.2)
-      activerecord (= 7.1.2)
-      activestorage (= 7.1.2)
-      activesupport (= 7.1.2)
+    rails (7.2.1)
+      actioncable (= 7.2.1)
+      actionmailbox (= 7.2.1)
+      actionmailer (= 7.2.1)
+      actionpack (= 7.2.1)
+      actiontext (= 7.2.1)
+      actionview (= 7.2.1)
+      activejob (= 7.2.1)
+      activemodel (= 7.2.1)
+      activerecord (= 7.2.1)
+      activestorage (= 7.2.1)
+      activesupport (= 7.2.1)
       bundler (>= 1.15.0)
-      railties (= 7.1.2)
+      railties (= 7.2.1)
     rails-dom-testing (2.2.0)
       activesupport (>= 5.0.0)
       minitest
@@ -200,10 +189,10 @@ GEM
     rails-html-sanitizer (1.6.0)
       loofah (~> 2.21)
       nokogiri (~> 1.14)
-    railties (7.1.2)
-      actionpack (= 7.1.2)
-      activesupport (= 7.1.2)
-      irb
+    railties (7.2.1)
+      actionpack (= 7.2.1)
+      activesupport (= 7.2.1)
+      irb (~> 1.13)
       rackup (>= 1.0.0)
       rake (>= 12.2)
       thor (~> 1.0, >= 1.2.2)
@@ -215,7 +204,7 @@ GEM
       redis-client (>= 0.9.0)
     redis-client (0.14.1)
       connection_pool
-    reline (0.4.1)
+    reline (0.5.10)
       io-console (~> 0.5)
     rspec-core (3.12.2)
       rspec-support (~> 3.12.0)
@@ -237,6 +226,7 @@ GEM
     ruby2_keywords (0.0.5)
     safety_net_attestation (0.4.0)
       jwt (~> 2.0)
+    securerandom (0.3.1)
     simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
@@ -253,6 +243,7 @@ GEM
       openssl-signature_algorithm (~> 1.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
+    useragent (0.16.10)
     webauthn (3.0.0)
       android_key_attestation (~> 0.3.0)
       awrence (~> 1.1)
@@ -269,8 +260,7 @@ GEM
     zeitwerk (2.6.12)
 
 PLATFORMS
-  arm64-darwin-22
-  x86_64-linux
+  ruby
 
 DEPENDENCIES
   bootsnap
@@ -292,13 +282,12 @@ DEPENDENCIES
   redis
   rspec-rails (~> 6.0)
   simplecov
-  simplecov-lcov!
   timecop
   tzinfo-data
   webauthn
 
 RUBY VERSION
-   ruby 3.2.2p53
+   ruby 3.3.5p100
 
 BUNDLED WITH
-   2.4.12
+   2.5.18
diff --git a/db/schema.rb b/db/schema.rb
index 8c8ad9d..83b3cd8 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_10_22_133724) do
+ActiveRecord::Schema[7.1].define(version: 2023_10_22_133724) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 19320c6..10f580d 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,13 +1,7 @@
 # SimpleCov should be loaded before any of application code
 require "simplecov"
-require "simplecov-lcov"
-
-SimpleCov::Formatter::LcovFormatter.config.report_with_single_file = true
-SimpleCov.formatters = SimpleCov::Formatter::MultiFormatter.new([
-  SimpleCov::Formatter::HTMLFormatter,
-  SimpleCov::Formatter::LcovFormatter,
-])
 
+SimpleCov.formatters = SimpleCov::Formatter::HTMLFormatter
 SimpleCov.start "rails" do
   add_filter "/spec/"
 end