diff --git a/.github/workflows/danger.yml b/.github/workflows/danger.yml
index 9dc8f39..950fef8 100644
--- a/.github/workflows/danger.yml
+++ b/.github/workflows/danger.yml
@@ -8,7 +8,7 @@ jobs:
       BUNDLE_GEMFILE: ${{ github.workspace }}/Gemfile.danger
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Set up Ruby
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 287ec05..67edec1 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
diff --git a/.github/workflows/test-activerecord.yml b/.github/workflows/test-activerecord.yml
index 96d41a5..5e53204 100644
--- a/.github/workflows/test-activerecord.yml
+++ b/.github/workflows/test-activerecord.yml
@@ -21,7 +21,7 @@ jobs:
           postgresql db: slack_ruby_bot_server_test
           postgresql user: test
           postgresql password: password
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.entry.ruby }}
diff --git a/.github/workflows/test-mongodb.yml b/.github/workflows/test-mongodb.yml
index 59ea0b9..3db354d 100644
--- a/.github/workflows/test-mongodb.yml
+++ b/.github/workflows/test-mongodb.yml
@@ -17,7 +17,7 @@ jobs:
       MONGOID_VERSION: ${{ matrix.entry.mongoid }}
       GRAPE_VERSION: ${{ matrix.entry.grape }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.entry.ruby }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7c250f5..dae6459 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
           - { ruby: 3.4 }
     name: test (ruby=${{ matrix.entry.ruby }})
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.entry.ruby }}