diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9e60410..08f546a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,7 +22,7 @@ jobs:
         export PATH=/tmp/texlive/bin/x86_64-linux:$PATH
     steps:
       - name: Set up Git repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install TeX Live
         run: |
@@ -55,7 +55,7 @@ jobs:
           # latexmk -lualatex -halt-on-error test-luatex
 
       - name: Upload CLS Files
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: "njuthesis-cls-${{ github.sha }}"
           path: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index bc7ef8d..631f863 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -21,7 +21,7 @@ jobs:
         export PATH=/tmp/texlive/bin/x86_64-linux:$PATH
     steps:
       - name: Set up Git repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Set Version
         run: echo "VERSION=${GITHUB_REF##*/}" >> $GITHUB_ENV