diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3a1e2843..415c9865 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3589,6 +3589,7 @@ packages:
         - safe-decimal
         - flush-queue
         - pvar
+        - conduit-aeson
 
     "Hans-Peter Deifel <hpd@hpdeifel.de> @hpdeifel":
         - hledger-iadd