diff --git a/types/aws-lambda/index.d.ts b/types/aws-lambda/index.d.ts
index e9577b34b5..f6a1aadc37 100644
--- a/types/aws-lambda/index.d.ts
+++ b/types/aws-lambda/index.d.ts
@@ -40,6 +40,7 @@ export interface APIGatewayEventRequestContext {
     connectedAt?: number;
     connectionId?: string;
     domainName?: string;
+    domainPrefix?: string;
     eventType?: string;
     extendedRequestId?: string;
     httpMethod: string;