diff --git a/build-constraints.yaml b/build-constraints.yaml
index bd181312..f0ecea98 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -452,7 +452,7 @@ packages:
 
     "Li-yao Xia <lysxia@gmail.com> @Lysxia":
         - boltzmann-samplers
-        - first-class-families
+        - first-class-families < 0.8.0.0
         - generic-data
         - generic-data-surgery < 0 # via generic-data
         - generic-random