diff --git a/build-constraints.yaml b/build-constraints.yaml
index 48167653..c1d87d8a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1010,6 +1010,7 @@ packages:
         - waitra
 
         # Not a maintainer
+        - arithmoi
         - hashable
         - haxl
         - monad-time