diff --git a/dev-docs/bidders/33across.md b/dev-docs/bidders/33across.md
index 5864168aec..6d80a41759 100644
--- a/dev-docs/bidders/33across.md
+++ b/dev-docs/bidders/33across.md
@@ -5,6 +5,7 @@ description: Prebid 33Across Bidder Adapter
 hide: true
 biddercode: 33across
 gdpr_supported: true
+schain_supported: true
 usp_supported: true
 ---