diff --git a/thrift/src/main/thrift/atoms/media.thrift b/thrift/src/main/thrift/atoms/media.thrift
index 542cdf9..deb2568 100644
--- a/thrift/src/main/thrift/atoms/media.thrift
+++ b/thrift/src/main/thrift/atoms/media.thrift
@@ -43,6 +43,7 @@ struct Asset {
   3: required string id
   4: required Platform platform
   5: optional string mimeType
+  6: optional string aspectRatio
 }
 
 struct PlutoData {