diff --git a/.github/workflows/deploy-book.yaml b/.github/workflows/deploy-book.yaml
index 9520980..49980ce 100644
--- a/.github/workflows/deploy-book.yaml
+++ b/.github/workflows/deploy-book.yaml
@@ -36,6 +36,8 @@ jobs:
       run:
         shell: bash -l {0}
     steps: 
+      - uses: actions/checkout@v4
+      
       - name: Download merged artifact
         if: inputs.is_preview != 'true'
         uses: actions/download-artifact@v4
@@ -59,27 +61,33 @@ jobs:
           unzip book.zip
           rm -f book.zip
 
+      - name: Debug
+        run: pwd
+
+      - name: Debug
+        run: ls -la book/_build/html
+
       - name: Deploy to GitHub Pages
         uses: JamesIves/github-pages-deploy-action@v4
         if: |
           (github.ref == 'refs/heads/main' && inputs.cname == 'None')
         with:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          BRANCH: gh-pages
-          FOLDER: ${{ inputs.publish_dir }}
-          CLEAN: true
-          KEEP_HISTORY: false
-          BASE_PATH: ${{ inputs.destination_dir }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+          branch: gh-pages
+          folder: ${{ inputs.publish_dir }}
+          clean: true
+          clean-exclude: "preview" # keep existing previews from other PRs
+          target-folder: ${{ inputs.destination_dir }}
 
       - name: Deploy to GitHub Pages with custom domain
         uses: JamesIves/github-pages-deploy-action@v4
         if: |
           (github.ref == 'refs/heads/main' && inputs.cname != 'None')
         with:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          BRANCH: gh-pages
-          FOLDER: ${{ inputs.publish_dir }}
-          CLEAN: true
-          KEEP_HISTORY: false
-          BASE_PATH: ${{ inputs.destination_dir }}
-          CNAME: ${{ inputs.cname }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+          branch: gh-pages
+          folder: ${{ inputs.publish_dir }}
+          clean: true
+          clean-exclude: "preview" # keep existing previews from other PRs
+          target-folder: ${{ inputs.destination_dir }}
+          CNAME: ${{ inputs.cname }} # how can we set this for the new action?