diff --git a/build-constraints.yaml b/build-constraints.yaml
index 414a4a46..342931eb 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1011,6 +1011,7 @@ packages:
         - waitra
 
         # Not a maintainer
+        - arithmoi
         - hashable
         - haxl
         - monad-time