diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5a37ca53..77ca2c01 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1609,6 +1609,7 @@ packages:
 
     "Dennis Gosnell <cdep.illabout@gmail.com> @cdepillabout":
         - ig
+        - natural-transformation
 
     "Franklin Chen <franklinchen@franklinchen.com> @FranklinChen":
         - Ebnf2ps