diff --git a/.github/workflows/generate_index.yml b/.github/workflows/generate_index.yml
index 500d229..f6a50b8 100644
--- a/.github/workflows/generate_index.yml
+++ b/.github/workflows/generate_index.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Check out repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{github.head_ref}}