diff --git a/.github/workflows/actions.yml b/.github/workflows/actions.yml
index 6801b79..61422eb 100644
--- a/.github/workflows/actions.yml
+++ b/.github/workflows/actions.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         ruby: ['3.2', '3.3', '3.4']
-        rails: ['6.1', '7.0', '7.1', '7.2', '8.0']
+        rails: ['7.2', '8.0', '8.1']
         include:
           - {ruby: '3.4', rails: '_main'}
           - {ruby: '3.1', rails: '6.1'}
diff --git a/Gemfile b/Gemfile
index 42bea7b..1c081f5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,3 @@
 # frozen_string_literal: true
 
-eval_gemfile Dir["gemfiles/rails[0-9]*.gemfile"].max
+eval_gemfile "gemfiles/rails7.2.gemfile"
diff --git a/Gemfile.lock b/Gemfile.lock
index 5fbc51b..bd39ca4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,28 +2,31 @@ PATH
   remote: .
   specs:
     stronger_parameters (2.23.1)
-      actionpack (>= 6.1)
+      actionpack (>= 7.2)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    actionpack (8.0.1)
-      actionview (= 8.0.1)
-      activesupport (= 8.0.1)
+    actionpack (7.2.3)
+      actionview (= 7.2.3)
+      activesupport (= 7.2.3)
+      cgi
       nokogiri (>= 1.8.5)
-      rack (>= 2.2.4)
+      racc
+      rack (>= 2.2.4, < 3.3)
       rack-session (>= 1.0.1)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
       useragent (~> 0.16)
-    actionview (8.0.1)
-      activesupport (= 8.0.1)
+    actionview (7.2.3)
+      activesupport (= 7.2.3)
       builder (~> 3.1)
+      cgi
       erubi (~> 1.11)
       rails-dom-testing (~> 2.2)
       rails-html-sanitizer (~> 1.6)
-    activesupport (8.0.1)
+    activesupport (7.2.3)
       base64
       benchmark (>= 0.3)
       bigdecimal
@@ -35,13 +38,13 @@ GEM
       minitest (>= 5.1)
       securerandom (>= 0.3)
       tzinfo (~> 2.0, >= 2.0.5)
-      uri (>= 0.13.1)
     ast (2.4.2)
     base64 (0.2.0)
     benchmark (0.4.0)
     bigdecimal (3.1.8)
     builder (3.3.0)
     bump (0.10.0)
+    cgi (0.5.0)
     concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     crass (1.0.6)
@@ -65,10 +68,8 @@ GEM
       nokogiri (>= 1.12.0)
     maxitest (5.8.0)
       minitest (>= 5.14.0, < 5.26.0)
-    mini_portile2 (2.8.7)
     minitest (5.25.4)
-    nokogiri (1.18.1)
-      mini_portile2 (~> 2.8.2)
+    nokogiri (1.18.1-aarch64-linux-gnu)
       racc (~> 1.4)
     nokogiri (1.18.1-arm64-darwin)
       racc (~> 1.4)
@@ -98,13 +99,15 @@ GEM
     rails-html-sanitizer (1.6.0)
       loofah (~> 2.21)
       nokogiri (~> 1.14)
-    railties (8.0.1)
-      actionpack (= 8.0.1)
-      activesupport (= 8.0.1)
+    railties (7.2.3)
+      actionpack (= 7.2.3)
+      activesupport (= 7.2.3)
+      cgi
       irb (~> 1.13)
       rackup (>= 1.0.0)
       rake (>= 12.2)
       thor (~> 1.0, >= 1.2.2)
+      tsort (>= 0.2)
       zeitwerk (~> 2.6)
     rainbow (3.1.1)
     rake (13.2.1)
@@ -145,27 +148,27 @@ GEM
       rubocop-performance (~> 1.22.0)
     stringio (3.1.2)
     thor (1.3.2)
+    tsort (0.2.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.6.0)
-    uri (1.0.2)
     useragent (0.16.11)
     zeitwerk (2.7.1)
 
 PLATFORMS
+  aarch64-linux
   arm64-darwin
-  ruby
   x86_64-linux
 
 DEPENDENCIES
   bump
   forking_test_runner
   maxitest
-  railties (~> 8.0.0)
+  railties (~> 7.2.0)
   rake
   single_cov
   standard
   stronger_parameters!
 
 BUNDLED WITH
-   2.6.2
+   2.7.2
diff --git a/gemfiles/rails6.1.gemfile b/gemfiles/rails6.1.gemfile
deleted file mode 100644
index 6158649..0000000
--- a/gemfiles/rails6.1.gemfile
+++ /dev/null
@@ -1,9 +0,0 @@
-# frozen_string_literal: true
-
-gem "railties", "~> 6.1.0"
-
-eval_gemfile "common.rb"
-gem "base64"
-gem "bigdecimal"
-gem "drb"
-gem "mutex_m"
diff --git a/gemfiles/rails6.1.gemfile.lock b/gemfiles/rails6.1.gemfile.lock
deleted file mode 100644
index ff08269..0000000
--- a/gemfiles/rails6.1.gemfile.lock
+++ /dev/null
@@ -1,142 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    stronger_parameters (2.23.1)
-      actionpack (>= 6.1)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    actionpack (6.1.7.6)
-      actionview (= 6.1.7.6)
-      activesupport (= 6.1.7.6)
-      rack (~> 2.0, >= 2.0.9)
-      rack-test (>= 0.6.3)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actionview (6.1.7.6)
-      activesupport (= 6.1.7.6)
-      builder (~> 3.1)
-      erubi (~> 1.4)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activesupport (6.1.7.6)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 1.6, < 2)
-      minitest (>= 5.1)
-      tzinfo (~> 2.0)
-      zeitwerk (~> 2.3)
-    ast (2.4.2)
-    base64 (0.2.0)
-    bigdecimal (3.1.9)
-    builder (3.2.4)
-    bump (0.10.0)
-    concurrent-ruby (1.2.3)
-    crass (1.0.6)
-    drb (2.2.1)
-    erubi (1.12.0)
-    forking_test_runner (1.14.0)
-      parallel_tests (>= 1.3.7)
-    i18n (1.14.1)
-      concurrent-ruby (~> 1.0)
-    json (2.8.2)
-    language_server-protocol (3.17.0.3)
-    lint_roller (1.1.0)
-    loofah (2.22.0)
-      crass (~> 1.0.2)
-      nokogiri (>= 1.12.0)
-    maxitest (5.8.0)
-      minitest (>= 5.14.0, < 5.26.0)
-    method_source (1.0.0)
-    mini_portile2 (2.8.5)
-    minitest (5.25.4)
-    mutex_m (0.3.0)
-    nokogiri (1.18.1)
-      mini_portile2 (~> 2.8.2)
-      racc (~> 1.4)
-    nokogiri (1.18.1-arm64-darwin)
-      racc (~> 1.4)
-    nokogiri (1.18.1-x86_64-linux-gnu)
-      racc (~> 1.4)
-    parallel (1.26.3)
-    parallel_tests (4.7.2)
-      parallel
-    parser (3.3.6.0)
-      ast (~> 2.4.1)
-      racc
-    racc (1.8.1)
-    rack (2.2.8)
-    rack-test (2.1.0)
-      rack (>= 1.3)
-    rails-dom-testing (2.2.0)
-      activesupport (>= 5.0.0)
-      minitest
-      nokogiri (>= 1.6)
-    rails-html-sanitizer (1.6.0)
-      loofah (~> 2.21)
-      nokogiri (~> 1.14)
-    railties (6.1.7.6)
-      actionpack (= 6.1.7.6)
-      activesupport (= 6.1.7.6)
-      method_source
-      rake (>= 12.2)
-      thor (~> 1.0)
-    rainbow (3.1.1)
-    rake (13.1.0)
-    regexp_parser (2.9.2)
-    rubocop (1.68.0)
-      json (~> 2.3)
-      language_server-protocol (>= 3.17.0)
-      parallel (~> 1.10)
-      parser (>= 3.3.0.2)
-      rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 2.4, < 3.0)
-      rubocop-ast (>= 1.32.2, < 2.0)
-      ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.36.1)
-      parser (>= 3.3.1.0)
-    rubocop-performance (1.22.1)
-      rubocop (>= 1.48.1, < 2.0)
-      rubocop-ast (>= 1.31.1, < 2.0)
-    ruby-progressbar (1.13.0)
-    single_cov (1.11.0)
-    standard (1.42.0)
-      language_server-protocol (~> 3.17.0.2)
-      lint_roller (~> 1.0)
-      rubocop (~> 1.68.0)
-      standard-custom (~> 1.0.0)
-      standard-performance (~> 1.5)
-    standard-custom (1.0.2)
-      lint_roller (~> 1.0)
-      rubocop (~> 1.50)
-    standard-performance (1.5.0)
-      lint_roller (~> 1.1)
-      rubocop-performance (~> 1.22.0)
-    thor (1.3.0)
-    tzinfo (2.0.6)
-      concurrent-ruby (~> 1.0)
-    unicode-display_width (2.6.0)
-    zeitwerk (2.6.13)
-
-PLATFORMS
-  arm64-darwin
-  ruby
-  x86_64-linux
-
-DEPENDENCIES
-  base64
-  bigdecimal
-  bump
-  drb
-  forking_test_runner
-  maxitest
-  mutex_m
-  railties (~> 6.1.0)
-  rake
-  single_cov
-  standard
-  stronger_parameters!
-
-BUNDLED WITH
-   2.6.2
diff --git a/gemfiles/rails7.0.gemfile b/gemfiles/rails7.0.gemfile
deleted file mode 100644
index 346404e..0000000
--- a/gemfiles/rails7.0.gemfile
+++ /dev/null
@@ -1,9 +0,0 @@
-# frozen_string_literal: true
-
-gem "railties", "~> 7.0.0"
-
-eval_gemfile "common.rb"
-gem "base64"
-gem "bigdecimal"
-gem "drb"
-gem "mutex_m"
diff --git a/gemfiles/rails7.0.gemfile.lock b/gemfiles/rails7.0.gemfile.lock
deleted file mode 100644
index b54d120..0000000
--- a/gemfiles/rails7.0.gemfile.lock
+++ /dev/null
@@ -1,142 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    stronger_parameters (2.23.1)
-      actionpack (>= 6.1)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    actionpack (7.0.8)
-      actionview (= 7.0.8)
-      activesupport (= 7.0.8)
-      rack (~> 2.0, >= 2.2.4)
-      rack-test (>= 0.6.3)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actionview (7.0.8)
-      activesupport (= 7.0.8)
-      builder (~> 3.1)
-      erubi (~> 1.4)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activesupport (7.0.8)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 1.6, < 2)
-      minitest (>= 5.1)
-      tzinfo (~> 2.0)
-    ast (2.4.2)
-    base64 (0.2.0)
-    bigdecimal (3.1.9)
-    builder (3.2.4)
-    bump (0.10.0)
-    concurrent-ruby (1.2.3)
-    crass (1.0.6)
-    drb (2.2.1)
-    erubi (1.12.0)
-    forking_test_runner (1.14.0)
-      parallel_tests (>= 1.3.7)
-    i18n (1.14.1)
-      concurrent-ruby (~> 1.0)
-    json (2.8.2)
-    language_server-protocol (3.17.0.3)
-    lint_roller (1.1.0)
-    loofah (2.22.0)
-      crass (~> 1.0.2)
-      nokogiri (>= 1.12.0)
-    maxitest (5.8.0)
-      minitest (>= 5.14.0, < 5.26.0)
-    method_source (1.0.0)
-    mini_portile2 (2.8.5)
-    minitest (5.25.4)
-    mutex_m (0.3.0)
-    nokogiri (1.18.1)
-      mini_portile2 (~> 2.8.2)
-      racc (~> 1.4)
-    nokogiri (1.18.1-arm64-darwin)
-      racc (~> 1.4)
-    nokogiri (1.18.1-x86_64-linux-gnu)
-      racc (~> 1.4)
-    parallel (1.26.3)
-    parallel_tests (4.7.2)
-      parallel
-    parser (3.3.6.0)
-      ast (~> 2.4.1)
-      racc
-    racc (1.8.1)
-    rack (2.2.8)
-    rack-test (2.1.0)
-      rack (>= 1.3)
-    rails-dom-testing (2.2.0)
-      activesupport (>= 5.0.0)
-      minitest
-      nokogiri (>= 1.6)
-    rails-html-sanitizer (1.6.0)
-      loofah (~> 2.21)
-      nokogiri (~> 1.14)
-    railties (7.0.8)
-      actionpack (= 7.0.8)
-      activesupport (= 7.0.8)
-      method_source
-      rake (>= 12.2)
-      thor (~> 1.0)
-      zeitwerk (~> 2.5)
-    rainbow (3.1.1)
-    rake (13.1.0)
-    regexp_parser (2.9.2)
-    rubocop (1.68.0)
-      json (~> 2.3)
-      language_server-protocol (>= 3.17.0)
-      parallel (~> 1.10)
-      parser (>= 3.3.0.2)
-      rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 2.4, < 3.0)
-      rubocop-ast (>= 1.32.2, < 2.0)
-      ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.36.1)
-      parser (>= 3.3.1.0)
-    rubocop-performance (1.22.1)
-      rubocop (>= 1.48.1, < 2.0)
-      rubocop-ast (>= 1.31.1, < 2.0)
-    ruby-progressbar (1.13.0)
-    single_cov (1.11.0)
-    standard (1.42.0)
-      language_server-protocol (~> 3.17.0.2)
-      lint_roller (~> 1.0)
-      rubocop (~> 1.68.0)
-      standard-custom (~> 1.0.0)
-      standard-performance (~> 1.5)
-    standard-custom (1.0.2)
-      lint_roller (~> 1.0)
-      rubocop (~> 1.50)
-    standard-performance (1.5.0)
-      lint_roller (~> 1.1)
-      rubocop-performance (~> 1.22.0)
-    thor (1.3.0)
-    tzinfo (2.0.6)
-      concurrent-ruby (~> 1.0)
-    unicode-display_width (2.6.0)
-    zeitwerk (2.6.13)
-
-PLATFORMS
-  arm64-darwin
-  ruby
-  x86_64-linux
-
-DEPENDENCIES
-  base64
-  bigdecimal
-  bump
-  drb
-  forking_test_runner
-  maxitest
-  mutex_m
-  railties (~> 7.0.0)
-  rake
-  single_cov
-  standard
-  stronger_parameters!
-
-BUNDLED WITH
-   2.6.2
diff --git a/gemfiles/rails7.1.gemfile.lock b/gemfiles/rails7.1.gemfile.lock
deleted file mode 100644
index b759203..0000000
--- a/gemfiles/rails7.1.gemfile.lock
+++ /dev/null
@@ -1,166 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    stronger_parameters (2.23.1)
-      actionpack (>= 6.1)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    actionpack (7.1.3)
-      actionview (= 7.1.3)
-      activesupport (= 7.1.3)
-      nokogiri (>= 1.8.5)
-      racc
-      rack (>= 2.2.4)
-      rack-session (>= 1.0.1)
-      rack-test (>= 0.6.3)
-      rails-dom-testing (~> 2.2)
-      rails-html-sanitizer (~> 1.6)
-    actionview (7.1.3)
-      activesupport (= 7.1.3)
-      builder (~> 3.1)
-      erubi (~> 1.11)
-      rails-dom-testing (~> 2.2)
-      rails-html-sanitizer (~> 1.6)
-    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)
-    ast (2.4.2)
-    base64 (0.2.0)
-    bigdecimal (3.1.6)
-    builder (3.2.4)
-    bump (0.10.0)
-    concurrent-ruby (1.2.3)
-    connection_pool (2.4.1)
-    crass (1.0.6)
-    drb (2.2.0)
-      ruby2_keywords
-    erubi (1.12.0)
-    forking_test_runner (1.14.0)
-      parallel_tests (>= 1.3.7)
-    i18n (1.14.1)
-      concurrent-ruby (~> 1.0)
-    io-console (0.7.2)
-    irb (1.11.1)
-      rdoc
-      reline (>= 0.4.2)
-    json (2.8.2)
-    language_server-protocol (3.17.0.3)
-    lint_roller (1.1.0)
-    loofah (2.22.0)
-      crass (~> 1.0.2)
-      nokogiri (>= 1.12.0)
-    maxitest (5.8.0)
-      minitest (>= 5.14.0, < 5.26.0)
-    mini_portile2 (2.8.5)
-    minitest (5.25.4)
-    mutex_m (0.2.0)
-    nokogiri (1.18.1)
-      mini_portile2 (~> 2.8.2)
-      racc (~> 1.4)
-    nokogiri (1.18.1-arm64-darwin)
-      racc (~> 1.4)
-    nokogiri (1.18.1-x86_64-linux-gnu)
-      racc (~> 1.4)
-    parallel (1.26.3)
-    parallel_tests (4.7.2)
-      parallel
-    parser (3.3.6.0)
-      ast (~> 2.4.1)
-      racc
-    psych (5.1.2)
-      stringio
-    racc (1.8.1)
-    rack (3.0.9)
-    rack-session (2.0.0)
-      rack (>= 3.0.0)
-    rack-test (2.1.0)
-      rack (>= 1.3)
-    rackup (2.1.0)
-      rack (>= 3)
-      webrick (~> 1.8)
-    rails-dom-testing (2.2.0)
-      activesupport (>= 5.0.0)
-      minitest
-      nokogiri (>= 1.6)
-    rails-html-sanitizer (1.6.0)
-      loofah (~> 2.21)
-      nokogiri (~> 1.14)
-    railties (7.1.3)
-      actionpack (= 7.1.3)
-      activesupport (= 7.1.3)
-      irb
-      rackup (>= 1.0.0)
-      rake (>= 12.2)
-      thor (~> 1.0, >= 1.2.2)
-      zeitwerk (~> 2.6)
-    rainbow (3.1.1)
-    rake (13.1.0)
-    rdoc (6.6.2)
-      psych (>= 4.0.0)
-    regexp_parser (2.9.2)
-    reline (0.4.2)
-      io-console (~> 0.5)
-    rubocop (1.68.0)
-      json (~> 2.3)
-      language_server-protocol (>= 3.17.0)
-      parallel (~> 1.10)
-      parser (>= 3.3.0.2)
-      rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 2.4, < 3.0)
-      rubocop-ast (>= 1.32.2, < 2.0)
-      ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.36.1)
-      parser (>= 3.3.1.0)
-    rubocop-performance (1.22.1)
-      rubocop (>= 1.48.1, < 2.0)
-      rubocop-ast (>= 1.31.1, < 2.0)
-    ruby-progressbar (1.13.0)
-    ruby2_keywords (0.0.5)
-    single_cov (1.11.0)
-    standard (1.42.0)
-      language_server-protocol (~> 3.17.0.2)
-      lint_roller (~> 1.0)
-      rubocop (~> 1.68.0)
-      standard-custom (~> 1.0.0)
-      standard-performance (~> 1.5)
-    standard-custom (1.0.2)
-      lint_roller (~> 1.0)
-      rubocop (~> 1.50)
-    standard-performance (1.5.0)
-      lint_roller (~> 1.1)
-      rubocop-performance (~> 1.22.0)
-    stringio (3.1.0)
-    thor (1.3.0)
-    tzinfo (2.0.6)
-      concurrent-ruby (~> 1.0)
-    unicode-display_width (2.6.0)
-    webrick (1.8.1)
-    zeitwerk (2.6.13)
-
-PLATFORMS
-  arm64-darwin
-  ruby
-  x86_64-linux
-
-DEPENDENCIES
-  bump
-  forking_test_runner
-  maxitest
-  railties (~> 7.1.0)
-  rake
-  single_cov
-  standard
-  stronger_parameters!
-
-BUNDLED WITH
-   2.6.2
diff --git a/gemfiles/rails7.2.gemfile.lock b/gemfiles/rails7.2.gemfile.lock
index c2e2cb8..db46717 100644
--- a/gemfiles/rails7.2.gemfile.lock
+++ b/gemfiles/rails7.2.gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: ..
   specs:
     stronger_parameters (2.23.1)
-      actionpack (>= 6.1)
+      actionpack (>= 7.2)
 
 GEM
   remote: https://rubygems.org/
@@ -65,10 +65,12 @@ GEM
       nokogiri (>= 1.12.0)
     maxitest (5.8.0)
       minitest (>= 5.14.0, < 5.26.0)
-    mini_portile2 (2.8.8)
     minitest (5.25.4)
-    nokogiri (1.18.1)
-      mini_portile2 (~> 2.8.2)
+    nokogiri (1.18.1-aarch64-linux-gnu)
+      racc (~> 1.4)
+    nokogiri (1.18.1-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.18.1-x86_64-linux-gnu)
       racc (~> 1.4)
     parallel (1.26.3)
     parallel_tests (4.8.0)
@@ -151,7 +153,9 @@ GEM
     zeitwerk (2.7.1)
 
 PLATFORMS
-  ruby
+  aarch64-linux
+  arm64-darwin
+  x86_64-linux
 
 DEPENDENCIES
   bump
@@ -164,4 +168,4 @@ DEPENDENCIES
   stronger_parameters!
 
 BUNDLED WITH
-   2.5.9
+   2.7.2
diff --git a/gemfiles/rails8.0.gemfile.lock b/gemfiles/rails8.0.gemfile.lock
index e4fc70e..dea898a 100644
--- a/gemfiles/rails8.0.gemfile.lock
+++ b/gemfiles/rails8.0.gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: ..
   specs:
     stronger_parameters (2.23.1)
-      actionpack (>= 6.1)
+      actionpack (>= 7.2)
 
 GEM
   remote: https://rubygems.org/
@@ -65,10 +65,12 @@ GEM
       nokogiri (>= 1.12.0)
     maxitest (5.8.0)
       minitest (>= 5.14.0, < 5.26.0)
-    mini_portile2 (2.8.8)
     minitest (5.25.4)
-    nokogiri (1.18.1)
-      mini_portile2 (~> 2.8.2)
+    nokogiri (1.18.1-aarch64-linux-gnu)
+      racc (~> 1.4)
+    nokogiri (1.18.1-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.18.1-x86_64-linux-gnu)
       racc (~> 1.4)
     parallel (1.26.3)
     parallel_tests (4.8.0)
@@ -152,7 +154,9 @@ GEM
     zeitwerk (2.7.1)
 
 PLATFORMS
-  ruby
+  aarch64-linux
+  arm64-darwin
+  x86_64-linux
 
 DEPENDENCIES
   bump
@@ -165,4 +169,4 @@ DEPENDENCIES
   stronger_parameters!
 
 BUNDLED WITH
-   2.5.9
+   2.7.2
diff --git a/gemfiles/rails7.1.gemfile b/gemfiles/rails8.1.gemfile
similarity index 67%
rename from gemfiles/rails7.1.gemfile
rename to gemfiles/rails8.1.gemfile
index 367a9f9..07d888f 100644
--- a/gemfiles/rails7.1.gemfile
+++ b/gemfiles/rails8.1.gemfile
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
-gem "railties", "~> 7.1.0"
+gem "railties", "~> 8.1.0"
 
 eval_gemfile "common.rb"
diff --git a/gemfiles/rails8.1.gemfile.lock b/gemfiles/rails8.1.gemfile.lock
new file mode 100644
index 0000000..a1fee8a
--- /dev/null
+++ b/gemfiles/rails8.1.gemfile.lock
@@ -0,0 +1,186 @@
+PATH
+  remote: ..
+  specs:
+    stronger_parameters (2.23.1)
+      actionpack (>= 7.2)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    actionpack (8.1.1)
+      actionview (= 8.1.1)
+      activesupport (= 8.1.1)
+      nokogiri (>= 1.8.5)
+      rack (>= 2.2.4)
+      rack-session (>= 1.0.1)
+      rack-test (>= 0.6.3)
+      rails-dom-testing (~> 2.2)
+      rails-html-sanitizer (~> 1.6)
+      useragent (~> 0.16)
+    actionview (8.1.1)
+      activesupport (= 8.1.1)
+      builder (~> 3.1)
+      erubi (~> 1.11)
+      rails-dom-testing (~> 2.2)
+      rails-html-sanitizer (~> 1.6)
+    activesupport (8.1.1)
+      base64
+      bigdecimal
+      concurrent-ruby (~> 1.0, >= 1.3.1)
+      connection_pool (>= 2.2.5)
+      drb
+      i18n (>= 1.6, < 2)
+      json
+      logger (>= 1.4.2)
+      minitest (>= 5.1)
+      securerandom (>= 0.3)
+      tzinfo (~> 2.0, >= 2.0.5)
+      uri (>= 0.13.1)
+    ast (2.4.3)
+    base64 (0.3.0)
+    benchmark (0.5.0)
+    bigdecimal (3.3.1)
+    builder (3.3.0)
+    bump (0.10.0)
+    concurrent-ruby (1.3.5)
+    connection_pool (2.5.5)
+    crass (1.0.6)
+    date (3.5.0)
+    drb (2.2.3)
+    erb (6.0.0)
+    erubi (1.13.1)
+    forking_test_runner (1.16.0)
+      benchmark (>= 0.5.0)
+      parallel_tests (>= 1.3.7)
+    i18n (1.14.7)
+      concurrent-ruby (~> 1.0)
+    io-console (0.8.1)
+    irb (1.15.3)
+      pp (>= 0.6.0)
+      rdoc (>= 4.0.0)
+      reline (>= 0.4.2)
+    json (2.16.0)
+    language_server-protocol (3.17.0.5)
+    lint_roller (1.1.0)
+    logger (1.7.0)
+    loofah (2.24.1)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.12.0)
+    maxitest (6.0.1)
+      minitest (>= 5.20.0, < 5.26.0)
+    minitest (5.25.5)
+    nokogiri (1.18.10-aarch64-linux-gnu)
+      racc (~> 1.4)
+    nokogiri (1.18.10-arm64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.18.10-x86_64-linux-gnu)
+      racc (~> 1.4)
+    parallel (1.27.0)
+    parallel_tests (5.5.0)
+      parallel
+    parser (3.3.10.0)
+      ast (~> 2.4.1)
+      racc
+    pp (0.6.3)
+      prettyprint
+    prettyprint (0.2.0)
+    prism (1.6.0)
+    psych (5.2.6)
+      date
+      stringio
+    racc (1.8.1)
+    rack (3.2.4)
+    rack-session (2.1.1)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0)
+    rack-test (2.2.0)
+      rack (>= 1.3)
+    rackup (2.2.1)
+      rack (>= 3)
+    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 (8.1.1)
+      actionpack (= 8.1.1)
+      activesupport (= 8.1.1)
+      irb (~> 1.13)
+      rackup (>= 1.0.0)
+      rake (>= 12.2)
+      thor (~> 1.0, >= 1.2.2)
+      tsort (>= 0.2)
+      zeitwerk (~> 2.6)
+    rainbow (3.1.1)
+    rake (13.3.1)
+    rdoc (6.16.1)
+      erb
+      psych (>= 4.0.0)
+      tsort
+    regexp_parser (2.11.3)
+    reline (0.6.3)
+      io-console (~> 0.5)
+    rubocop (1.81.7)
+      json (~> 2.3)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.1.0)
+      parallel (~> 1.10)
+      parser (>= 3.3.0.2)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 2.9.3, < 3.0)
+      rubocop-ast (>= 1.47.1, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 4.0)
+    rubocop-ast (1.48.0)
+      parser (>= 3.3.7.2)
+      prism (~> 1.4)
+    rubocop-performance (1.25.0)
+      lint_roller (~> 1.1)
+      rubocop (>= 1.75.0, < 2.0)
+      rubocop-ast (>= 1.38.0, < 2.0)
+    ruby-progressbar (1.13.0)
+    securerandom (0.4.1)
+    single_cov (1.11.0)
+    standard (1.52.0)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.81.7)
+      standard-custom (~> 1.0.0)
+      standard-performance (~> 1.8)
+    standard-custom (1.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.50)
+    standard-performance (1.8.0)
+      lint_roller (~> 1.1)
+      rubocop-performance (~> 1.25.0)
+    stringio (3.1.8)
+    thor (1.4.0)
+    tsort (0.2.0)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
+    unicode-display_width (3.2.0)
+      unicode-emoji (~> 4.1)
+    unicode-emoji (4.1.0)
+    uri (1.1.1)
+    useragent (0.16.11)
+    zeitwerk (2.7.3)
+
+PLATFORMS
+  aarch64-linux
+  arm64-darwin
+  x86_64-linux
+
+DEPENDENCIES
+  bump
+  forking_test_runner
+  maxitest
+  railties (~> 8.1.0)
+  rake
+  single_cov
+  standard
+  stronger_parameters!
+
+BUNDLED WITH
+   2.7.2
diff --git a/stronger_parameters.gemspec b/stronger_parameters.gemspec
index 7bc295e..06b2ecb 100644
--- a/stronger_parameters.gemspec
+++ b/stronger_parameters.gemspec
@@ -13,7 +13,7 @@ Gem::Specification.new do |spec|
 
   spec.files = Dir.glob("lib/**/*") + %w[README.md]
 
-  spec.add_runtime_dependency "actionpack", ">= 6.1"
+  spec.add_runtime_dependency "actionpack", ">= 7.2"
 
   spec.required_ruby_version = ">= 3.1"
   spec.metadata["rubygems_mfa_required"] = "true"