diff --git a/doc/langref.html.in b/doc/langref.html.in
index 495f7bc4774ad8bbdd0cbe17756805e47e10139c..0ebc1a3c215cd555a8b470d5ba3cafadb8bca9db 100644
--- a/doc/langref.html.in
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@@ -3,6 +3,7 @@
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="color-scheme" content="light dark">
     <title>Documentation - The Zig Programming Language</title>
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