diff --git a/build-constraints.yaml b/build-constraints.yaml
index fab5a2a2..1c0730e1 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -266,6 +266,7 @@ packages:
 
     "Li-yao Xia <lysxia@gmail.com> @Lysxia":
         - boltzmann-samplers
+        - first-class-families
         - generic-data
         - generic-random
         - scanf