diff --git a/proto/v1/Span.proto b/proto/v1/Span.proto
index b995b42..ebdabd3 100644
--- a/proto/v1/Span.proto
+++ b/proto/v1/Span.proto
@@ -144,6 +144,7 @@ message PApiMetaData {
     string apiInfo = 2;
     int32 line = 3;
     int32 type = 4;
+    string location = 5;
 }
 
 message PStringMetaData {