diff --git a/build-constraints.yaml b/build-constraints.yaml
index 74575306..5ae07ae7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3691,6 +3691,7 @@ packages:
         - colorize-haskell
 
     "Chris Martin <ch.martin@gmail.com> @chris-martin":
+        - data-forest
         - loc
         - partial-semigroup
         - path-text-utf8