diff --git a/build-constraints.yaml b/build-constraints.yaml
index c79f0f57..92c7974a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -33,6 +33,7 @@ packages:
 
     "Nobutada Matsubara <t12307043@gunma-u.ac.jp> @matsubara0507":
         - chatwork
+        - rakuten
 
     "Pavol Klacansky <pavol@klacansky.com> @pavolzetor":
         - openexr-write