diff --git a/build-constraints.yaml b/build-constraints.yaml
index d7e3b75e..978879c6 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2988,6 +2988,7 @@ packages:
         - quickcheck-classes
         - arithmoi
         - bitvec
+        - poly
 
     "Ashley Yakeley <ashley@semantic.org> @AshleyYakeley":
         - countable