diff --git a/src/layouts/BaseLayout.astro b/src/layouts/BaseLayout.astro
index a87538f..e72994c 100644
--- a/src/layouts/BaseLayout.astro
+++ b/src/layouts/BaseLayout.astro
@@ -60,6 +60,11 @@ const metaTagTitle = `${title} - Spotify Playlist Archive`;
         } else {
           document.documentElement.setAttribute('data-theme', 'dark');
         }
+
+        localStorage.setItem(
+          'theme',
+          document.documentElement.getAttribute('data-theme')
+        );
       };
     </script>
   </head>