diff --git a/.github/workflows/book.yml b/.github/workflows/book.yml
index 2b9a6567..7533fdd3 100644
--- a/.github/workflows/book.yml
+++ b/.github/workflows/book.yml
@@ -18,7 +18,7 @@ jobs:
       - name: Checkout [${{ github.repository }}]
         uses: actions/checkout@v4
 
-      - uses: cvxgrp/.github/actions/uv/sphinx@v2.0.8
+      - uses: cvxgrp/.github/actions/uv/sphinx@v2.0.13
 
   test:
     runs-on: "ubuntu-latest"