diff --git a/.github/workflows/docs-update.yml b/.github/workflows/docs-update.yml
index 3ca9bf4..6b85fff 100644
--- a/.github/workflows/docs-update.yml
+++ b/.github/workflows/docs-update.yml
@@ -21,6 +21,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           ref: gh-pages
+          fetch-depth: 0
 
       - name: checkout current branch
         uses: actions/checkout@v4