diff --git a/.github/actions/setup/directories/action.yml b/.github/actions/setup/directories/action.yml
index f93733a919066c..b64227e4359c71 100644
--- a/.github/actions/setup/directories/action.yml
+++ b/.github/actions/setup/directories/action.yml
@@ -88,7 +88,7 @@ runs:
         git config --global init.defaultBranch garbage
 
     - if: inputs.checkout
-      uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
       with:
         path: ${{ inputs.srcdir }}
         fetch-depth: ${{ inputs.fetch-depth }}
diff --git a/.github/workflows/annocheck.yml b/.github/workflows/annocheck.yml
index a23a380c171449..c1d227181a7c6b 100644
--- a/.github/workflows/annocheck.yml
+++ b/.github/workflows/annocheck.yml
@@ -61,7 +61,7 @@ jobs:
       - run: id
         working-directory:
 
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
diff --git a/.github/workflows/auto_review_pr.yml b/.github/workflows/auto_review_pr.yml
index 48ccf2c1bbf57c..34081cfdf7bc7f 100644
--- a/.github/workflows/auto_review_pr.yml
+++ b/.github/workflows/auto_review_pr.yml
@@ -19,7 +19,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5.0.1
+        uses: actions/checkout@v6.0.0
 
       - uses: ruby/setup-ruby@ab177d40ee5483edb974554986f56b33477e21d0 # v1.265.0
         with:
diff --git a/.github/workflows/baseruby.yml b/.github/workflows/baseruby.yml
index 08303b043bfb22..68d65dd71cbb3a 100644
--- a/.github/workflows/baseruby.yml
+++ b/.github/workflows/baseruby.yml
@@ -53,7 +53,7 @@ jobs:
           ruby-version: ${{ matrix.ruby }}
           bundler: none
 
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - uses: ./.github/actions/setup/ubuntu
 
diff --git a/.github/workflows/bundled_gems.yml b/.github/workflows/bundled_gems.yml
index 3ae5b85a54a536..58742c1ce18134 100644
--- a/.github/workflows/bundled_gems.yml
+++ b/.github/workflows/bundled_gems.yml
@@ -31,7 +31,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           token: ${{ (github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull')) && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
 
diff --git a/.github/workflows/check_dependencies.yml b/.github/workflows/check_dependencies.yml
index e6b6e25428c01a..ee17217f274bcc 100644
--- a/.github/workflows/check_dependencies.yml
+++ b/.github/workflows/check_dependencies.yml
@@ -30,7 +30,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - uses: ./.github/actions/setup/ubuntu
         if: ${{ contains(matrix.os, 'ubuntu') }}
diff --git a/.github/workflows/check_misc.yml b/.github/workflows/check_misc.yml
index d619493d4faf56..d181759fc1320a 100644
--- a/.github/workflows/check_misc.yml
+++ b/.github/workflows/check_misc.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           token: ${{ (github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull')) && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
 
@@ -65,7 +65,7 @@ jobs:
           echo RDOC='ruby -W0 --disable-gems tool/rdoc-srcdir -q' >> $GITHUB_ENV
 
       - name: Checkout rdoc
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           repository: ruby/rdoc
           ref: ${{ steps.rdoc.outputs.ref }}
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index d4c29594a29bc2..62fc319b19d1dd 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -58,7 +58,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - name: Install libraries
         if: ${{ contains(matrix.os, 'macos') }}
diff --git a/.github/workflows/compilers.yml b/.github/workflows/compilers.yml
index b841b4c18be9f0..f8ff22fe10fa0a 100644
--- a/.github/workflows/compilers.yml
+++ b/.github/workflows/compilers.yml
@@ -51,7 +51,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       # Set fetch-depth: 10 so that Launchable can receive commits information.
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
@@ -74,7 +74,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       - name: 'GCC 15 LTO'
@@ -104,7 +104,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       - { uses: './.github/actions/compilers', name: 'clang 22', with: { tag: 'clang-22' }, timeout-minutes: 5 }
@@ -126,7 +126,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       - { uses: './.github/actions/compilers', name: 'clang 13', with: { tag: 'clang-13' }, timeout-minutes: 5 }
@@ -147,7 +147,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       # -Wno-strict-prototypes is necessary with current clang-15 since
@@ -173,7 +173,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       - { uses: './.github/actions/compilers', name: 'C++20', with: { CXXFLAGS: '-std=c++20 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
@@ -193,7 +193,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       - { uses: './.github/actions/compilers', name: 'disable-jit',         with: { append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
@@ -215,7 +215,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       - { uses: './.github/actions/compilers', name: 'NDEBUG',                         with: { cppflags: '-DNDEBUG' }, timeout-minutes: 5 }
@@ -235,7 +235,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       - { uses: './.github/actions/compilers', name: 'HASH_DEBUG',                     with: { cppflags: '-DHASH_DEBUG' }, timeout-minutes: 5 }
@@ -255,7 +255,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       - { uses: './.github/actions/compilers', name: 'USE_LAZY_LOAD',                  with: { cppflags: '-DUSE_LAZY_LOAD' }, timeout-minutes: 5 }
@@ -275,7 +275,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       - { uses: './.github/actions/compilers', name: 'GC_DEBUG_STRESS_TO_CLASS',       with: { cppflags: '-DGC_DEBUG_STRESS_TO_CLASS' }, timeout-minutes: 5 }
@@ -294,7 +294,7 @@ jobs:
     timeout-minutes: 60
     services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
       - { uses: './.github/actions/compilers', name: 'VM_DEBUG_BP_CHECK',              with: { cppflags: '-DVM_DEBUG_BP_CHECK' }, timeout-minutes: 5 }
@@ -320,7 +320,7 @@ jobs:
       - 'compileB'
       - 'compileC'
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
       - uses: ./.github/actions/slack
         with:
diff --git a/.github/workflows/cygwin.yml b/.github/workflows/cygwin.yml
index 20713516f1568d..8b97cc195ff8c8 100644
--- a/.github/workflows/cygwin.yml
+++ b/.github/workflows/cygwin.yml
@@ -40,7 +40,7 @@ jobs:
     steps:
       - run: git config --global core.autocrlf input
 
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - name: Setup Cygwin
         uses: cygwin/cygwin-install-action@master
diff --git a/.github/workflows/default_gems_list.yml b/.github/workflows/default_gems_list.yml
index 727828b02d642e..63671382f94941 100644
--- a/.github/workflows/default_gems_list.yml
+++ b/.github/workflows/default_gems_list.yml
@@ -20,7 +20,7 @@ jobs:
     if: ${{ github.repository == 'ruby/ruby' }}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           token: ${{ (github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull')) && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
 
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 941645e4eac6f5..9a1feb06358463 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -61,7 +61,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
diff --git a/.github/workflows/mingw.yml b/.github/workflows/mingw.yml
index f7e25526e05f43..192f71649a9a35 100644
--- a/.github/workflows/mingw.yml
+++ b/.github/workflows/mingw.yml
@@ -166,7 +166,7 @@ jobs:
           [ ${#failed[@]} -eq 0 ]
         shell: sh
 
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
diff --git a/.github/workflows/modgc.yml b/.github/workflows/modgc.yml
index 0dfa024f3740f9..8b62ccd111b72a 100644
--- a/.github/workflows/modgc.yml
+++ b/.github/workflows/modgc.yml
@@ -48,7 +48,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
diff --git a/.github/workflows/parse_y.yml b/.github/workflows/parse_y.yml
index 64feb546176bf7..337973a54d07a6 100644
--- a/.github/workflows/parse_y.yml
+++ b/.github/workflows/parse_y.yml
@@ -51,7 +51,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
diff --git a/.github/workflows/post_push.yml b/.github/workflows/post_push.yml
index 11987a16654dc9..188b4d94d0056e 100644
--- a/.github/workflows/post_push.yml
+++ b/.github/workflows/post_push.yml
@@ -28,7 +28,7 @@ jobs:
           REDMINE_SYS_API_KEY: ${{ secrets.REDMINE_SYS_API_KEY }}
         if: ${{ github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/ruby_') }}
 
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           fetch-depth: 500 # for notify-slack-commits
           token: ${{ secrets.MATZBOT_AUTO_UPDATE_TOKEN }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2b2d1286205cc4..24bdec5eb9d257 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5.0.1
+      - uses: actions/checkout@v6.0.0
 
       - uses: ruby/setup-ruby@v1
         with:
diff --git a/.github/workflows/rust-warnings.yml b/.github/workflows/rust-warnings.yml
index 37d016dada8700..f05b35346e8703 100644
--- a/.github/workflows/rust-warnings.yml
+++ b/.github/workflows/rust-warnings.yml
@@ -36,7 +36,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - name: Install Rust
         run: rustup default beta
diff --git a/.github/workflows/scorecards.yml b/.github/workflows/scorecards.yml
index e7a9721b06841a..6233f06661d557 100644
--- a/.github/workflows/scorecards.yml
+++ b/.github/workflows/scorecards.yml
@@ -34,7 +34,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/spec_guards.yml b/.github/workflows/spec_guards.yml
index 50b921b1a4547c..20b3367c832a75 100644
--- a/.github/workflows/spec_guards.yml
+++ b/.github/workflows/spec_guards.yml
@@ -45,7 +45,7 @@ jobs:
       fail-fast: false
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - uses: ruby/setup-ruby@ab177d40ee5483edb974554986f56b33477e21d0 # v1.265.0
         with:
diff --git a/.github/workflows/sync_default_gems.yml b/.github/workflows/sync_default_gems.yml
index 6c1f01806f2adb..26144cc49689eb 100644
--- a/.github/workflows/sync_default_gems.yml
+++ b/.github/workflows/sync_default_gems.yml
@@ -27,7 +27,7 @@ jobs:
     if: ${{ github.repository == 'ruby/ruby' }}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         name: Check out ruby/ruby
         with:
           token: ${{ github.repository == 'ruby/ruby' && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index 7e12c56dd94dfd..9ec59324900094 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -60,7 +60,7 @@ jobs:
       )}}
 
     steps: &make-steps
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
diff --git a/.github/workflows/wasm.yml b/.github/workflows/wasm.yml
index 2115d1abec8921..082d1984e50620 100644
--- a/.github/workflows/wasm.yml
+++ b/.github/workflows/wasm.yml
@@ -59,7 +59,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 3dce96def3e92e..4659fb80f8434d 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -66,7 +66,7 @@ jobs:
           bundler: none
           windows-toolchain: none
 
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
diff --git a/.github/workflows/yjit-macos.yml b/.github/workflows/yjit-macos.yml
index 0927134aa10d5e..148dd7a4a3268d 100644
--- a/.github/workflows/yjit-macos.yml
+++ b/.github/workflows/yjit-macos.yml
@@ -41,7 +41,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - run: RUST_BACKTRACE=1 cargo test
         working-directory: yjit
@@ -83,7 +83,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
diff --git a/.github/workflows/yjit-ubuntu.yml b/.github/workflows/yjit-ubuntu.yml
index 922363108e18bf..5303ab1c794f09 100644
--- a/.github/workflows/yjit-ubuntu.yml
+++ b/.github/workflows/yjit-ubuntu.yml
@@ -36,7 +36,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       # For now we can't run cargo test --offline because it complains about the
       # capstone dependency, even though the dependency is optional
@@ -68,7 +68,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       # Check that we don't have linting errors in release mode, too
       - run: cargo clippy --all-targets --all-features
@@ -120,7 +120,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
diff --git a/.github/workflows/zjit-macos.yml b/.github/workflows/zjit-macos.yml
index 7965440da5d3b1..fc7bf459d89de5 100644
--- a/.github/workflows/zjit-macos.yml
+++ b/.github/workflows/zjit-macos.yml
@@ -68,7 +68,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
@@ -172,7 +172,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - uses: ./.github/actions/setup/macos
 
@@ -192,7 +192,7 @@ jobs:
         run: echo "MAKEFLAGS=" >> "$GITHUB_ENV"
 
       - name: Checkout ruby-bench
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           repository: ruby/ruby-bench
           path: ruby-bench
diff --git a/.github/workflows/zjit-ubuntu.yml b/.github/workflows/zjit-ubuntu.yml
index 7778c449e8e8ea..ac400d410d6cf6 100644
--- a/.github/workflows/zjit-ubuntu.yml
+++ b/.github/workflows/zjit-ubuntu.yml
@@ -41,7 +41,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - run: cargo clippy --all-targets --all-features
         working-directory: zjit
@@ -103,7 +103,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           sparse-checkout-cone-mode: false
           sparse-checkout: /.github
@@ -228,7 +228,7 @@ jobs:
       )}}
 
     steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       - uses: ./.github/actions/setup/ubuntu
 
@@ -244,7 +244,7 @@ jobs:
       - run: make install
 
       - name: Checkout ruby-bench
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           repository: ruby/ruby-bench
           path: ruby-bench
diff --git a/NEWS.md b/NEWS.md
index 41c87bf9478c71..6fea49923f1a96 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -335,6 +335,7 @@ A lot of work has gone into making Ractors more stable, performant, and usable.
 [Feature #21219]: https://bugs.ruby-lang.org/issues/21219
 [Feature #21258]: https://bugs.ruby-lang.org/issues/21258
 [Feature #21262]: https://bugs.ruby-lang.org/issues/21262
+[Feature #21275]: https://bugs.ruby-lang.org/issues/21275
 [Feature #21287]: https://bugs.ruby-lang.org/issues/21287
 [Feature #21347]: https://bugs.ruby-lang.org/issues/21347
 [Feature #21360]: https://bugs.ruby-lang.org/issues/21360
diff --git a/common.mk b/common.mk
index 70d61231f278c0..e5f9c7c3711d7a 100644
--- a/common.mk
+++ b/common.mk
@@ -706,7 +706,8 @@ distclean-local:: clean-local
 	$(Q)$(RM) config.cache config.status config.status.lineno
 	$(Q)$(RM) *~ *.bak *.stackdump core *.core gmon.out $(PREP)
 	-$(Q)$(RMALL) $(srcdir)/autom4te.cache
-distclean-ext:: PHONY
+distclean-local:: distclean-srcs-local
+distclean-ext:: distclean-srcs-ext
 distclean-golf: clean-golf
 distclean-rdoc: clean-rdoc
 distclean-html: clean-html
@@ -721,6 +722,7 @@ realclean:: realclean-ext realclean-local realclean-enc realclean-golf realclean
 realclean-local:: distclean-local realclean-srcs-local
 
 clean-srcs:: clean-srcs-local clean-srcs-ext
+distclean-srcs:: distclean-srcs-local distclean-srcs-ext
 realclean-srcs:: realclean-srcs-local realclean-srcs-ext
 
 clean-srcs-local::
@@ -728,7 +730,9 @@ clean-srcs-local::
 	$(Q)$(RM) id.c id.h probes.dmyh probes.h
 	$(Q)$(RM) encdb.h transdb.h verconf.h ruby-runner.h
 
-realclean-srcs-local:: clean-srcs-local
+distclean-srcs-local:: clean-srcs-local
+
+realclean-srcs-local:: distclean-srcs-local
 	$(Q)$(CHDIR) $(srcdir) && $(RM) \
 	  parse.c parse.h lex.c enc/trans/newline.c $(PRELUDES) revision.h \
 	  id.c id.h probes.dmyh configure aclocal.m4 tool/config.guess tool/config.sub \
@@ -736,7 +740,8 @@ realclean-srcs-local:: clean-srcs-local
 	|| $(NULLCMD)
 
 clean-srcs-ext::
-realclean-srcs-ext:: clean-srcs-ext
+distclean-srcs-ext:: clean-srcs-ext
+realclean-srcs-ext:: distclean-srcs-ext
 
 realclean-ext:: PHONY
 realclean-golf: distclean-golf
@@ -1007,8 +1012,11 @@ $(ENC_MK): $(srcdir)/enc/make_encmake.rb $(srcdir)/enc/Makefile.in $(srcdir)/enc
 .PHONY: test install install-nodoc install-doc dist
 .PHONY: loadpath golf capi rdoc install-prereq clear-installed-list
 .PHONY: clean clean-ext clean-local clean-enc clean-golf clean-rdoc clean-html clean-extout
+.PHONY: clean-srcs clean-srcs-local clean-srcs-ext
 .PHONY: distclean distclean-ext distclean-local distclean-enc distclean-golf distclean-extout
+.PHONY: distclean-srcs distclean-srcs-local distclean-srcs-ext
 .PHONY: realclean realclean-ext realclean-local realclean-enc realclean-golf realclean-extout
+.PHONY: realclean-srcs realclean-srcs-local realclean-srcs-ext
 .PHONY: exam check test test-short test-all btest btest-ruby test-basic test-knownbug
 .PHONY: run runruby parse benchmark gdb gdb-ruby
 .PHONY: update-mspec update-rubyspec test-rubyspec test-spec
diff --git a/doc/syntax/methods.rdoc b/doc/syntax/methods.rdoc
index 8dafa6bb0cf894..14810a188f06d8 100644
--- a/doc/syntax/methods.rdoc
+++ b/doc/syntax/methods.rdoc
@@ -100,6 +100,7 @@ operators.
 <code>/</code>   :: divide
 <code>%</code>   :: modulus division, String#%
 <code>&</code>   :: AND
+<code>|</code>   :: OR
 <code>^</code>   :: XOR (exclusive OR)
 <code>>></code>  :: right-shift
 <code><<</code>  :: left-shift, append
diff --git a/man/ruby.1 b/man/ruby.1
index 28d7ddadfa0d51..d19cea99ca3c5b 100644
--- a/man/ruby.1
+++ b/man/ruby.1
@@ -287,6 +287,8 @@ to the standard output.
 .It Fl -debug
 Turns on debug mode.
 .Li "$DEBUG"
+and
+.Li "$VERBOSE"
 will be set to true.
 .Pp
 .It Fl e Ar command
diff --git a/prism/srcs.mk b/prism/srcs.mk
index ff4ddff0722e32..167aa4dbe07e89 100644
--- a/prism/srcs.mk
+++ b/prism/srcs.mk
@@ -12,7 +12,13 @@ prism/$(HAVE_BASERUBY:yes=.srcs.mk.time): \
 		$(PRISM_SRCDIR)/srcs.mk.in
 	$(BASERUBY) $(tooldir)/generic_erb.rb -c -t$@ -o $(PRISM_SRCDIR)/srcs.mk $(PRISM_SRCDIR)/srcs.mk.in
 
-realclean-prism-srcs::
+distclean-prism-srcs::
+	$(RM) prism/.srcs.mk.time
+	$(RMDIR) prism
+
+distclean-srcs-local:: distclean-prism-srcs
+
+realclean-prism-srcs:: distclean-prism-srcs
 	$(RM) $(PRISM_SRCDIR)/srcs.mk
 
 realclean-srcs-local:: realclean-prism-srcs
diff --git a/prism/srcs.mk.in b/prism/srcs.mk.in
index e337eff8ea00e5..b67ce993709ac3 100644
--- a/prism/srcs.mk.in
+++ b/prism/srcs.mk.in
@@ -20,7 +20,13 @@ prism/$(HAVE_BASERUBY:yes=.srcs.mk.time): \
 		$(PRISM_SRCDIR)/<%=%><%=script%>
 	$(BASERUBY) $(tooldir)/generic_erb.rb -c -t$@ -o $(PRISM_SRCDIR)/<%=%><%=srcs%> $(PRISM_SRCDIR)/<%=%><%=script%>
 
-realclean-prism-srcs::
+distclean-prism-srcs::
+	$(RM) prism/.srcs.mk.time
+	$(RMDIR) prism
+
+distclean-srcs-local:: distclean-prism-srcs
+
+realclean-prism-srcs:: distclean-prism-srcs
 	$(RM) $(PRISM_SRCDIR)/<%=%><%=srcs%>
 
 realclean-srcs-local:: realclean-prism-srcs
diff --git a/ruby.c b/ruby.c
index f1089ca41e9173..11376cbe7066a9 100644
--- a/ruby.c
+++ b/ruby.c
@@ -326,7 +326,7 @@ usage(const char *name, int help, int highlight, int columns)
         M("-a",		   "",                     "Split each input line ($_) into fields ($F)."),
         M("-c",		   "",			   "Check syntax (no execution)."),
         M("-Cdirpath",     "",			   "Execute program in specified directory."),
-        M("-d",		   ", --debug",		   "Set debugging flag ($DEBUG) to true."),
+        M("-d",		   ", --debug",		   "Set debugging flag ($DEBUG) and $VERBOSE to true."),
         M("-e 'code'",     "",			   "Execute given Ruby code; multiple -e allowed."),
         M("-Eex[:in]",     ", --encoding=ex[:in]", "Set default external and internal encodings."),
         M("-Fpattern",	   "",			   "Set input field separator ($;); used with -a."),
diff --git a/thread.c b/thread.c
index 3e9bf3192d0c62..f545a5377d8ed6 100644
--- a/thread.c
+++ b/thread.c
@@ -1013,7 +1013,7 @@ rb_thread_create_ractor(rb_ractor_t *r, VALUE args, VALUE proc)
         .args = args,
         .proc = proc,
     };
-    return thread_create_core(rb_thread_alloc(rb_cThread), &params);;
+    return thread_create_core(rb_thread_alloc(rb_cThread), &params);
 }
 
 
diff --git a/tool/make-snapshot b/tool/make-snapshot
index 2b9a5006e032ca..8251fa6324f970 100755
--- a/tool/make-snapshot
+++ b/tool/make-snapshot
@@ -10,6 +10,7 @@ require 'fileutils'
 require 'shellwords'
 require 'tmpdir'
 require 'pathname'
+require 'date'
 require 'yaml'
 require 'json'
 require File.expand_path("../lib/vcs", __FILE__)
@@ -641,7 +642,7 @@ revisions.collect {|rev| package(vcs, rev, destdir, tmp)}.flatten.each do |name|
   key = basename[/\A(.*)\.(?:tar|zip)/, 1]
   info[key] ||= Hash.new{|h,k|h[k]={}}
   info[key]['version'] = version if version
-  info[key]['date'] = release_date.strftime('%Y-%m-%d')
+  info[key]['date'] = release_date.to_date
   if version
     info[key]['post'] = "/en/news/#{release_date.strftime('%Y/%m/%d')}/ruby-#{version.tr('.', '-')}-released/"
     info[key]['url'][extname] = "https://cache.ruby-lang.org/pub/ruby/#{version[/\A\d+\.\d+/]}/#{basename}"