diff --git a/themes/danbooru2/style.css b/themes/danbooru2/style.css
index a6c56b94..2dd608e3 100644
--- a/themes/danbooru2/style.css
+++ b/themes/danbooru2/style.css
@@ -1,4 +1,6 @@
 :root {
+	color-scheme: light dark;
+
 	--page: #FFFFFF;
 	--text: black;
 
diff --git a/themes/default/style.css b/themes/default/style.css
index 33fce907..46e7a2c5 100644
--- a/themes/default/style.css
+++ b/themes/default/style.css
@@ -1,4 +1,6 @@
 :root {
+	color-scheme: light dark;
+
 	--page: #EEE;
 	--text: #000;
 	--link-default: #0000EE;