diff --git a/.github/workflows/generate-timetable.yml b/.github/workflows/generate-timetable.yml
index 751364e0..fec16cb4 100644
--- a/.github/workflows/generate-timetable.yml
+++ b/.github/workflows/generate-timetable.yml
@@ -6,7 +6,7 @@ jobs:
     name: Generate timetable markdown file
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v7
       - name: generate
         run: |
           bash bin/generate_timetable
diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index ff3d47f6..279e4fe8 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -20,7 +20,7 @@ jobs:
         node-version: [16.x]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v7
 
       - name: Use Node.js
         uses: actions/setup-node@v2
diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 8cb3508c..ef11be47 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -17,7 +17,7 @@ jobs:
         node-version: [16.x]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v7
 
       - name: Use Node.js
         uses: actions/setup-node@v2