diff --git a/build-constraints.yaml b/build-constraints.yaml
index 615df236..1973748f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1056,6 +1056,7 @@ packages:
         - dhall
         - dhall-bash
         - dhall-json
+        - dhall-yaml
         - aeson-yaml  # req'd by dhall-json
         # - dhall-nix # deriving-compat via hnix