diff --git a/trace.go b/trace.go
index 347e34f..4577db2 100644
--- a/trace.go
+++ b/trace.go
@@ -56,5 +56,7 @@ type Span interface {
 
 	InjectContext(requestHeaders HeaderMap, requestInfo RequestInfo)
 
+	InjectExitContext(responseHeaders HeaderMap, requestInfo RequestInfo)
+
 	SpawnChild(operationName string, startTime time.Time) Span
 }