diff --git a/build-constraints.yaml b/build-constraints.yaml
index 0b6fadfa..6e0ad678 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4093,6 +4093,9 @@ packages:
         - vformat-time
         - vformat-aeson
         - hkd-default
+    
+    "Shintaro Sakata <shintaro.sakata.tokyo@gmail.com> @chemirea":
+        - utf8-conversions
 
     "Grandfathered dependencies":
         - network