diff --git a/.circleci/config.yml b/.circleci/config.yml
index c458500b..45942dcd 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -12,7 +12,7 @@ executors:
       - image: ruby:<< parameters.tag >>
     environment:
       BUNDLE_PATH: vendor/bundle
-      BUNDLE_WITHOUT: development
+      BUNDLE_WITHOUT: "development"
     working_directory: ~/app
 
 commands:
@@ -141,8 +141,8 @@ build_jobs: &build_jobs
         parameters:
           ruby-version:
             # - "3.0.1" # たまにSEGVするので
-            - "3.0.2"
-            - "3.1.2"
+            # - "3.0.2"
+            # - "3.1.2"
       requires:
         - bundle_install
   - rspec:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 207be02f..93fe0ece 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -9,6 +9,8 @@ jobs:
     timeout-minutes: 5
     permissions:
       contents: write
+    env:
+      BUNDLE_WITHOUT: "development"
 
     steps:
     - uses: actions/checkout@v3
diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index fcb0e3e8..7246fa9b 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -17,6 +17,8 @@ jobs:
     strategy:
       matrix:
         ruby-version: ['3.0', '3.1', '3.2', '3.3.0']
+    env:
+      BUNDLE_WITHOUT: "development"
 
     steps:
     - uses: actions/checkout@v3
@@ -28,4 +30,4 @@ jobs:
     - name: Run tests
       run: |-
         bundle exec rake
-        bundle exec steep check
+        # bundle exec steep check
diff --git a/.rubocop.yml b/.rubocop.yml
index 65e53a88..a1c08602 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -38,3 +38,5 @@ Lint/AmbiguousBlockAssociation:
     Enabled: false
 Security/Eval:
     Enabled: false
+Lint/MissingSuper:
+    Enabled: false
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b50fc66d..c6161aa7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## unrelease
+* ruby-2.5のサポート終了しました
+
 ## [0.3.12] 2024-1-8
 * sudoをつけずにPBMを起動できるようになりました。(なお周辺ファイルは未対応)
 * setting.ymlからコントローラーアイコンの色を変更できるようになりました
diff --git a/Gemfile b/Gemfile
index 5f51c0c0..06772541 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,11 +10,14 @@ gem "rake"
 gem "rspec"
 gem "rubocop", require: false
 gem "serialport" # シリアル通信をする時に必要。通常はいらない
-gem "sinatra", require: false
-gem "solargraph", require: false
-gem "stackprof", require: false
 gem "timecop"
-gem "webrick", require: false
+
+group :development do
+  gem "sinatra", require: false
+  gem "solargraph", "0.50.0", require: false
+  gem "stackprof", require: false
+  gem "webrick", require: false
+end
 
 if Gem::Version.new(RUBY_VERSION) > Gem::Version.new("2.6.0")
   gem 'rbs', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index c0aa6e4b..5fc70126 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,135 +12,171 @@ GEM
   specs:
     action_cable_client (3.1.0)
       websocket-eventmachine-client (>= 1.2.0)
-    activesupport (6.1.4.1)
+    activesupport (7.1.3)
+      base64
+      bigdecimal
       concurrent-ruby (~> 1.0, >= 1.0.2)
+      connection_pool (>= 2.2.5)
+      drb
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
+      mutex_m
       tzinfo (~> 2.0)
-      zeitwerk (~> 2.3)
     ast (2.4.2)
     backport (1.2.0)
-    benchmark (0.2.1)
+    base64 (0.2.0)
+    benchmark (0.3.0)
+    bigdecimal (3.1.6)
     blue_green_process (0.1.4.3)
     coderay (1.1.3)
-    concurrent-ruby (1.1.9)
-    diff-lcs (1.4.4)
+    concurrent-ruby (1.2.3)
+    connection_pool (2.4.1)
+    csv (3.2.8)
+    diff-lcs (1.5.0)
+    drb (2.2.0)
+      ruby2_keywords
     e2mmap (0.1.0)
     eventmachine (1.2.7)
-    ffi (1.15.4)
-    i18n (1.8.11)
+    ffi (1.16.3)
+    fileutils (1.7.2)
+    i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.6)
+    json (2.7.1)
     kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
-    language_server-protocol (3.16.0.3)
-    listen (3.7.0)
+    language_server-protocol (3.17.0.3)
+    listen (3.8.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
+    logger (1.6.0)
     method_source (1.0.0)
     mini_portile2 (2.8.5)
-    minitest (5.14.4)
-    mustermann (1.1.1)
+    minitest (5.21.2)
+    mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
+    mutex_m (0.2.0)
     nokogiri (1.15.5)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    parallel (1.21.0)
-    parser (3.0.3.2)
+    nokogiri (1.15.5-arm-linux)
+      racc (~> 1.4)
+    nokogiri (1.15.5-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.15.5-x86_64-linux)
+      racc (~> 1.4)
+    parallel (1.24.0)
+    parser (3.3.0.4)
       ast (~> 2.4.1)
+      racc
     pbmenv (0.1.13)
-    pry (0.14.1)
+    pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
     racc (1.7.3)
-    rack (2.2.3.1)
-    rack-protection (2.2.0)
-      rack
-    rainbow (3.0.0)
-    rake (13.0.6)
-    rb-fsevent (0.11.0)
+    rack (3.0.8)
+    rack-protection (4.0.0)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.0.0)
+      rack (>= 3.0.0)
+    rainbow (3.1.1)
+    rake (13.1.0)
+    rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rbs (1.7.1)
+    rbs (2.8.4)
     rbtree (0.4.6)
-    regexp_parser (2.2.0)
+    regexp_parser (2.9.0)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.2.5)
-    rspec (3.10.0)
-      rspec-core (~> 3.10.0)
-      rspec-expectations (~> 3.10.0)
-      rspec-mocks (~> 3.10.0)
-    rspec-core (3.10.1)
-      rspec-support (~> 3.10.0)
-    rspec-expectations (3.10.1)
+    rexml (3.2.6)
+    rspec (3.12.0)
+      rspec-core (~> 3.12.0)
+      rspec-expectations (~> 3.12.0)
+      rspec-mocks (~> 3.12.0)
+    rspec-core (3.12.2)
+      rspec-support (~> 3.12.0)
+    rspec-expectations (3.12.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-mocks (3.10.2)
+      rspec-support (~> 3.12.0)
+    rspec-mocks (3.12.6)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.10.0)
-    rspec-support (3.10.3)
-    rubocop (1.23.0)
+      rspec-support (~> 3.12.0)
+    rspec-support (3.12.1)
+    rubocop (1.60.1)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
-      parser (>= 3.0.0.0)
+      parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
-      rexml
-      rubocop-ast (>= 1.12.0, < 2.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.14.0)
-      parser (>= 3.0.1.1)
-    ruby-progressbar (1.11.0)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.30.0)
+      parser (>= 3.2.1.0)
+    ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
+    securerandom (0.3.1)
     serialport (1.3.2)
     set (1.1.0)
-    sinatra (2.2.0)
-      mustermann (~> 1.0)
-      rack (~> 2.2)
-      rack-protection (= 2.2.0)
+    sinatra (4.0.0)
+      mustermann (~> 3.0)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.0.0)
+      rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
-    solargraph (0.48.0)
+    solargraph (0.50.0)
       backport (~> 1.2)
       benchmark
-      bundler (>= 1.17.2)
+      bundler (~> 2.0)
       diff-lcs (~> 1.4)
       e2mmap
       jaro_winkler (~> 1.5)
       kramdown (~> 2.3)
       kramdown-parser-gfm (~> 1.1)
       parser (~> 3.0)
-      reverse_markdown (>= 1.0.5, < 3)
-      rubocop (>= 0.52)
+      rbs (~> 2.0)
+      reverse_markdown (~> 2.0)
+      rubocop (~> 1.38)
       thor (~> 1.0)
       tilt (~> 2.0)
       yard (~> 0.9, >= 0.9.24)
     sorted_set (1.0.3)
       rbtree
       set (~> 1.0)
-    stackprof (0.2.22)
-    steep (0.47.0)
+    stackprof (0.2.26)
+    steep (1.4.0)
       activesupport (>= 5.1)
+      concurrent-ruby (>= 1.2.2)
+      csv (>= 3.0.9)
+      fileutils (>= 1.1.0)
+      json (>= 2.1.0)
       language_server-protocol (>= 3.15, < 4.0)
       listen (~> 3.0)
-      parallel (>= 1.0.0)
-      parser (>= 3.0)
+      logger (>= 1.3.0)
+      parser (>= 3.1)
       rainbow (>= 2.2.2, < 4.0)
-      rbs (~> 1.7.0)
+      rbs (>= 2.8.0)
+      securerandom (>= 0.1)
+      strscan (>= 1.0.0)
       terminal-table (>= 2, < 4)
+    strscan (3.0.9)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
-    thor (1.2.2)
-    tilt (2.0.10)
-    timecop (0.9.4)
-    typeprof (0.20.4)
-      rbs (>= 1.6.2)
-    tzinfo (2.0.4)
+    thor (1.3.0)
+    tilt (2.3.0)
+    timecop (0.9.8)
+    typeprof (0.21.9)
+      rbs (>= 1.8.1)
+    tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    unicode-display_width (2.1.0)
-    webrick (1.7.0)
+    unicode-display_width (2.5.0)
+    webrick (1.8.1)
     websocket (1.2.10)
     websocket-eventmachine-base (1.2.0)
       eventmachine (~> 1.0)
@@ -150,7 +186,6 @@ GEM
       websocket-eventmachine-base (~> 1.0)
     websocket-native (1.0.0)
     yard (0.9.34)
-    zeitwerk (2.5.1)
 
 PLATFORMS
   arm-linux
@@ -169,7 +204,7 @@ DEPENDENCIES
   rubocop
   serialport
   sinatra
-  solargraph
+  solargraph (= 0.50.0)
   stackprof
   steep
   timecop
diff --git a/lib/procon_bypass_man/buttons_setting_configuration/layer.rb b/lib/procon_bypass_man/buttons_setting_configuration/layer.rb
index 82460ed9..ae5833cb 100644
--- a/lib/procon_bypass_man/buttons_setting_configuration/layer.rb
+++ b/lib/procon_bypass_man/buttons_setting_configuration/layer.rb
@@ -133,7 +133,7 @@ def open_macro(name, steps: [], if_pressed: nil, if_tilted_left_stick: nil, forc
           return
         end
 
-        macro_name = name || "OpenMacro-#{steps.join}".to_sym
+        macro_name = name || :"OpenMacro-#{steps.join}"
         @context.macro_registry.install_plugin(macro_name, steps: steps)
         self.macros[macro_name] = { if_pressed: if_pressed, if_tilted_left_stick: if_tilted_left_stick, force_neutral: force_neutral }.compact
       end
diff --git a/lib/procon_bypass_man/bypass/bypass_command.rb b/lib/procon_bypass_man/bypass/bypass_command.rb
index efccf288..402de9e9 100644
--- a/lib/procon_bypass_man/bypass/bypass_command.rb
+++ b/lib/procon_bypass_man/bypass/bypass_command.rb
@@ -89,7 +89,7 @@ def execute
       # TODO: 本当はいらないんだけど、なぜか反映されないのでここでも設定する
       BlueGreenProcess.config.logger = ProconBypassMan.logger
 
-      while(readable_io = IO.select([self_read]))
+      while(readable_io = IO.select([self_read])) # rubocop:disable Lint/IncompatibleIoSelectWithFiberScheduler # TODO後で直す
         signal = readable_io.first[0].gets.strip
         case signal
         when 'USR2'
diff --git a/lib/procon_bypass_man/commands/print_boot_message_command.rb b/lib/procon_bypass_man/commands/print_boot_message_command.rb
index 1290e8cb..f7c7688c 100644
--- a/lib/procon_bypass_man/commands/print_boot_message_command.rb
+++ b/lib/procon_bypass_man/commands/print_boot_message_command.rb
@@ -59,6 +59,6 @@ def self.execute
     message = BootMessage.new
     ProconBypassMan::ReportBootJob.perform_async(message.to_hash)
     ProconBypassMan.logger.info message.to_s
-    puts message.to_s
+    puts message
   end
 end
diff --git a/lib/procon_bypass_man/device_connection/command.rb b/lib/procon_bypass_man/device_connection/command.rb
index 326954d3..664c5c51 100644
--- a/lib/procon_bypass_man/device_connection/command.rb
+++ b/lib/procon_bypass_man/device_connection/command.rb
@@ -15,7 +15,8 @@ def self.execute!(retry_count: 0)
 
       retry_count = retry_count + 1
       retry
-    rescue ProconBypassMan::DeviceConnection::NotFoundProconError, ProconBypassMan::DeviceConnection::SetupIncompleteError => e
+    rescue ProconBypassMan::DeviceConnection::NotFoundProconError, ProconBypassMan::DeviceConnection::SetupIncompleteError => e # rubocop:disable Lint/UselessRescue
+      # TODO: エラークラスを作ってなげる
       raise
     end
 
diff --git a/lib/procon_bypass_man/external_input/external_data.rb b/lib/procon_bypass_man/external_input/external_data.rb
index acd8d1f2..957fb82e 100644
--- a/lib/procon_bypass_man/external_input/external_data.rb
+++ b/lib/procon_bypass_man/external_input/external_data.rb
@@ -1,7 +1,7 @@
 module ProconBypassMan
   module ExternalInput
     class ExternalData
-      UNPRESS_BUTTONS = Set.new(ProconBypassMan::Procon::ButtonCollection.available.map { |x| "un#{x}".to_sym })
+      UNPRESS_BUTTONS = Set.new(ProconBypassMan::Procon::ButtonCollection.available.map { |x| :"un#{x}" })
 
       # @return [String, NilClass] 16進数表現のデータ
       attr_reader :hex
diff --git a/lib/procon_bypass_man/procon.rb b/lib/procon_bypass_man/procon.rb
index 48720a46..126de187 100644
--- a/lib/procon_bypass_man/procon.rb
+++ b/lib/procon_bypass_man/procon.rb
@@ -133,7 +133,7 @@ def apply!
         no_op_step = :wait_for_0_3 # マクロの最後に固まって最後の入力をし続けるので、無の状態を最後に注入する
         BlueGreenProcess::SharedVariable.extend_run_on_this_process = true
         ProconBypassMan.buttons_setting_configuration.macro_registry.cleanup_remote_macros!
-        macro_name = task.name || "RemoteMacro-#{task.steps.join}".to_sym
+        macro_name = task.name || :"RemoteMacro-#{task.steps.join}"
         task.steps << no_op_step
         ProconBypassMan.buttons_setting_configuration.macro_registry.install_plugin(macro_name, steps: task.steps, macro_type: :remote)
         @@status[:ongoing_macro] = ProconBypassMan.buttons_setting_configuration.macro_registry.load(macro_name, macro_type: :remote) do
diff --git a/lib/procon_bypass_man/procon/macro_builder.rb b/lib/procon_bypass_man/procon/macro_builder.rb
index 73ababbe..9a7d44ac 100644
--- a/lib/procon_bypass_man/procon/macro_builder.rb
+++ b/lib/procon_bypass_man/procon/macro_builder.rb
@@ -17,7 +17,7 @@ def self.merge(subjects)
 
   class Subject
     def initialize(value)
-      if not /^shake_/ =~ value
+      if not (/^shake_/ =~ value)
         @button =
           if match = value.match(/_(\w+)\z/)
             match[1]
@@ -106,7 +106,7 @@ def build_if_v2_format?(step: )
     end
 
     if /^rotation_left_stick/ =~ step
-      roll_left_stick_steps = 0.step(359, 17).map { |x| ["tilt_left_stick_completely_to_#{x}deg".to_sym] }
+      roll_left_stick_steps = 0.step(359, 17).map { |x| [:"tilt_left_stick_completely_to_#{x}deg"] }
       return { steps: roll_left_stick_steps }
     end
 
diff --git a/lib/procon_bypass_man/runner.rb b/lib/procon_bypass_man/runner.rb
index 1adb9c05..10b1d0ee 100644
--- a/lib/procon_bypass_man/runner.rb
+++ b/lib/procon_bypass_man/runner.rb
@@ -28,7 +28,7 @@ def run
 
       begin
         # TODO 子プロセスが消滅した時に、メインプロセスは生き続けてしまい、何もできなくなる問題がある
-        while(readable_io = IO.select([self_read]))
+        while(readable_io = IO.select([self_read])) # rubocop:disable Lint/IncompatibleIoSelectWithFiberScheduler # TODO後で直す
           signal = readable_io.first[0].gets.strip
           ProconBypassMan.logger.debug "[BYPASS] MASTERプロセスで#{signal}シグナルを受け取りました"
           case signal
diff --git a/lib/procon_bypass_man/support/can_over_process.rb b/lib/procon_bypass_man/support/can_over_process.rb
index 793799fd..154be097 100644
--- a/lib/procon_bypass_man/support/can_over_process.rb
+++ b/lib/procon_bypass_man/support/can_over_process.rb
@@ -13,7 +13,7 @@ def self.extended(mod)
   def start_distributed_object!
     return unless enable?
 
-    FileUtils.rm_rf(socket_file_path) if File.exist?(socket_file_path)
+    FileUtils.rm_rf(socket_file_path)
     begin
       self.drb_server = DRb.start_service(socket_path, distributed_class.new, safe_level: 1)
     rescue Errno::EADDRINUSE => e