diff --git a/.github/workflows/gen_schedule_update_deps.yaml b/.github/workflows/gen_schedule_update_deps.yaml
index b7b8437..502b600 100644
--- a/.github/workflows/gen_schedule_update_deps.yaml
+++ b/.github/workflows/gen_schedule_update_deps.yaml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
     - name: Check out repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0
 
diff --git a/.github/workflows/wf_check.yaml b/.github/workflows/wf_check.yaml
index a9578c8..a590a5c 100644
--- a/.github/workflows/wf_check.yaml
+++ b/.github/workflows/wf_check.yaml
@@ -26,7 +26,7 @@ jobs:
 
     steps:
     - name: "Check out repository"
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0
         ref: ${{ inputs.GIT_REF }}