diff --git a/doc/whats-new.rst b/doc/whats-new.rst
index 4d313e94a4b..d86ec107205 100644
--- a/doc/whats-new.rst
+++ b/doc/whats-new.rst
@@ -87,6 +87,8 @@ Bug fixes
   contain datetime-like values prior to being passed to
   :py:func:`xarray.conventions.decode_cf_variable` (:issue:`6453`,
   :pull:`6489`). By `Spencer Clark <https://github.com/spencerkclark>`_.
+- Dark themes are now properly detected in Furo-themed Sphinx documents (:issue:`6500`, :pull:`6501`).
+  By `Kevin Paul <https://github.com/kmpaul>`_.
 
 Documentation
 ~~~~~~~~~~~~~
diff --git a/xarray/static/css/style.css b/xarray/static/css/style.css
index b3b8a162e9a..9fa27c03359 100644
--- a/xarray/static/css/style.css
+++ b/xarray/static/css/style.css
@@ -14,6 +14,7 @@
 }
 
 html[theme=dark],
+body[data-theme=dark],
 body.vscode-dark {
   --xr-font-color0: rgba(255, 255, 255, 1);
   --xr-font-color2: rgba(255, 255, 255, 0.54);