diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2c448c86..9ab7a757 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -67,7 +67,7 @@ packages:
     "Nobutada Matsubara <t12307043@gunma-u.ac.jp> @matsubara0507":
         - chatwork
         - rakuten
-        # - servant-kotlin # formatting 6.3
+        - servant-kotlin
 
     "Pavol Klacansky <pavol@klacansky.com> @pavolzetor":
         - openexr-write