diff --git a/.github/workflows/build-book.yml b/.github/workflows/build-book.yml
index fc6526a3..d93c0d7c 100644
--- a/.github/workflows/build-book.yml
+++ b/.github/workflows/build-book.yml
@@ -25,7 +25,7 @@ jobs:
           git restore-mtime
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.13"