diff --git a/.github/workflows/book-pages.yml b/.github/workflows/book-pages.yml
index e0a96b1..94ca6ae 100644
--- a/.github/workflows/book-pages.yml
+++ b/.github/workflows/book-pages.yml
@@ -23,7 +23,7 @@ jobs:
   book:
     # Body owned once by Atlas (ADR 0035), pinned by SHA like any action. The
     # shared workflow keeps pull-request builds separate from deployment.
-    uses: ryancinsight/atlas/.github/workflows/book-pages.yml@578150340157c6da25f4ee2b37d6b4639d787c1a
+    uses: ryancinsight/atlas/.github/workflows/book-pages.yml@d875348197be12ad593f993a6f1b8a62d3b8b195
     permissions:
       contents: read
       pages: write