diff --git a/build-constraints.yaml b/build-constraints.yaml
index 1ac3ffc0..059c9bf0 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1762,6 +1762,7 @@ packages:
         - hamilton
         - prompt
         - tagged-binary
+        - type-combinators-singletons
         - typelits-witnesses
         - uncertain
         - vector-sized