diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cf09336..c990675 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Run tests
         shell: bash
         run: ./check_email_pr.sh --test
diff --git a/.github/workflows/pr-check-emails.yml b/.github/workflows/pr-check-emails.yml
index 03cd639..53a0847 100644
--- a/.github/workflows/pr-check-emails.yml
+++ b/.github/workflows/pr-check-emails.yml
@@ -7,6 +7,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Check PR emails
         uses: ./