diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 9668b3c2eb..1d1d07c863 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -17,6 +17,9 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+          fetch-tags: false
       - uses: actions/setup-python@v6
         with:
           python-version: '3.14'
diff --git a/conf.py b/conf.py
index e425028388..127ee0d28a 100644
--- a/conf.py
+++ b/conf.py
@@ -18,19 +18,23 @@
 templates_path = ['_templates']
 html_copy_source = False
 html_favicon = '_static/favicon.png'
-sitemap_locales = ['en', 'ja', 'ko', 'zh-cn', 'zh-tw']
 highlight_language = 'none'
 suppress_warnings = [
     'image.not_readable',
     'myst.header',
+    'git.dependency_not_found'
 ]
 navigation_depth = 2
 html_theme_path = ['_themes']
 html_theme = 'piccolo_theme'
 html_show_sphinx = False
 html_baseurl = 'https://help.emeditor.com/'
-sitemap_url_scheme = '{lang}{link}'
 smartquotes = False
+
+sitemap_locales = ['en', 'ja', 'ko', 'zh-cn', 'zh-tw']
+sitemap_url_scheme = '{lang}{link}'
+sitemap_show_lastmod = True
+
 latex_engine = 'lualatex'
 latex_elements = {
     'fontpkg': r'''