diff --git a/build-constraints.yaml b/build-constraints.yaml
index e87b5b6f..ae5c37ad 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1497,6 +1497,7 @@ packages:
 
     "Florian Ragwitz <florian.ragwitz@gmail.com> @rafl":
         - data-findcycle
+        - multisets
 
     "Aditya Bhargava <adit@adit.io> @egonSchiele":
         - HandsomeSoup