diff --git a/build-constraints.yaml b/build-constraints.yaml
index 0f6d247c..4b8eef65 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1642,6 +1642,9 @@ packages:
         - lens < 4.13
         - semigroups < 0.17
 
+        # https://github.com/fpco/stackage/issues/946
+        - cereal < 0.5
+
 
 # end of packages