diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8567439..ef3f188 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Generate PDF documents
         uses: xu-cheng/latex-action@v2