diff --git a/microsite/docusaurus.config.ts b/microsite/docusaurus.config.ts
index 09411c4092..d71483ab8f 100644
--- a/microsite/docusaurus.config.ts
+++ b/microsite/docusaurus.config.ts
@@ -344,7 +344,7 @@ const config: Config = {
 
     colorMode: {
       disableSwitch: false,
-      respectPrefersColorScheme: true,
+      defaultMode: 'dark',
     },
     navbar: {
       logo: {