diff --git a/types/aws-lambda/common/api-gateway.d.ts b/types/aws-lambda/common/api-gateway.d.ts
index f6090f2b5e..49e4b95b8d 100644
--- a/types/aws-lambda/common/api-gateway.d.ts
+++ b/types/aws-lambda/common/api-gateway.d.ts
@@ -9,6 +9,7 @@ export interface APIGatewayEventRequestContext {
     domainPrefix?: string;
     eventType?: string;
     extendedRequestId?: string;
+    protocol: string;
     httpMethod: string;
     identity: APIGatewayEventIdentity;
     messageDirection?: string;
diff --git a/types/aws-lambda/test/api-gateway-tests.ts b/types/aws-lambda/test/api-gateway-tests.ts
index 2ae90a6b4c..a91d338883 100644
--- a/types/aws-lambda/test/api-gateway-tests.ts
+++ b/types/aws-lambda/test/api-gateway-tests.ts
@@ -28,6 +28,7 @@ let proxyHandler: APIGatewayProxyHandler = async (event, context, callback) => {
     requestContext = event.requestContext;
     str = event.resource;
 
+    str = requestContext.protocol;
     str = requestContext.accountId;
     str = requestContext.apiId;
     const authContext: AuthResponseContext | null | undefined = requestContext.authorizer;