diff --git a/build-constraints.yaml b/build-constraints.yaml
index 68de2476..5b3e8a6e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4697,6 +4697,9 @@ packages:
 
     "Jan Synacek <jan.synacek@scrive.com> @jsynacek":
         - hpqtypes
+        - fields-json
+        - log-base
+        - unjson
 
     "Daan Leijen <daan@effp.org> @daanx":
         - isocline