diff --git a/openrtb_ext/bidders.go b/openrtb_ext/bidders.go
index 9e86ad86ec..fd7893a5a5 100644
--- a/openrtb_ext/bidders.go
+++ b/openrtb_ext/bidders.go
@@ -276,7 +276,8 @@ const (
 	BidderReservedPrebid  BidderName = "prebid"  // Reserved for Prebid Server configuration.
 	BidderReservedSKAdN   BidderName = "skadn"   // Reserved for Apple's SKAdNetwork OpenRTB extension.
 	BidderReservedTID     BidderName = "tid"     // Reserved for Per-Impression Transactions IDs for Multi-Impression Bid Requests.
-	BidderReservedAE      BidderName = "ae"      // Reserved for FLEDGE Auction Environment
+	BidderReservedAE      BidderName = "ae"      // Reserved for PAAPI Auction Environment.
+	BidderReservedIGS     BidderName = "igs"     // Reserved for PAAPI Interest Group Seller object.
 )
 
 // IsBidderNameReserved returns true if the specified name is a case insensitive match for a reserved bidder name.
@@ -317,10 +318,14 @@ func IsBidderNameReserved(name string) bool {
 		return true
 	}
 
+	if strings.EqualFold(name, string(BidderReservedIGS)) {
+		return true
+	}
+
 	return false
 }
 
-// IsPotentialBidder returns true if the name is not reserved witbin the imp[].ext context
+// IsPotentialBidder returns true if the name is not reserved within the imp[].ext context
 func IsPotentialBidder(name string) bool {
 	switch BidderName(name) {
 	case BidderReservedContext:
@@ -337,6 +342,8 @@ func IsPotentialBidder(name string) bool {
 		return false
 	case BidderReservedAE:
 		return false
+	case BidderReservedIGS:
+		return false
 	default:
 		return true
 	}