diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index 76d3df5..42a5546 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       # renovate: rust-lang/mdBook
-      MDBOOK_VERSION: '0.5.2'
+      MDBOOK_VERSION: '0.5.3'
     steps:
       - name: Checkout
         uses: actions/checkout@v6