diff --git a/.github/workflows/spell-check.yml b/.github/workflows/spell-check.yml
index 6c9d769..34f002b 100644
--- a/.github/workflows/spell-check.yml
+++ b/.github/workflows/spell-check.yml
@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       # See: https://github.com/codespell-project/actions-codespell/blob/master/README.md
       - name: Spell check
diff --git a/.github/workflows/sync-labels.yml b/.github/workflows/sync-labels.yml
index 9873387..9ea8407 100644
--- a/.github/workflows/sync-labels.yml
+++ b/.github/workflows/sync-labels.yml
@@ -27,7 +27,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Download JSON schema for labels configuration file
         id: download-schema
@@ -106,7 +106,7 @@ jobs:
           echo "::set-output name=flag::--dry-run"
 
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Download configuration file artifacts
         uses: actions/download-artifact@v6
diff --git a/.github/workflows/validate-action_yml.yml b/.github/workflows/validate-action_yml.yml
index a4c6ab7..e36d5bf 100644
--- a/.github/workflows/validate-action_yml.yml
+++ b/.github/workflows/validate-action_yml.yml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout local repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Download JSON schema for action.yml
         uses: carlosperate/download-file-action@v2