diff --git a/build-constraints.yaml b/build-constraints.yaml
index 90a69848..476fe63d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -154,6 +154,7 @@ packages:
         - rainbow
         - rainbox
         - pipes-cliff
+        - anonymous-sums
         - multiarg
         - prednote
         - cartel