diff --git a/events/apigw.go b/events/apigw.go
index ad3ab150..7999876c 100644
--- a/events/apigw.go
+++ b/events/apigw.go
@@ -185,7 +185,7 @@ type APIGatewayWebsocketProxyRequestContext struct {
 	ExtendedRequestID    string                    `json:"extendedRequestId"`
 	IntegrationLatency   string                    `json:"integrationLatency,omitempty"`
 	MessageDirection     string                    `json:"messageDirection"`
-	MessageID            string                    `json:"messageId,omitempty"`
+	MessageID            interface{}               `json:"messageId,omitempty"`
 	RequestTime          string                    `json:"requestTime"`
 	RequestTimeEpoch     int64                     `json:"requestTimeEpoch"`
 	RouteKey             string                    `json:"routeKey"`