diff --git a/build-constraints.yaml b/build-constraints.yaml
index 65f10bea..8a4a855c 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3938,6 +3938,7 @@ packages:
         - hex-text
         - invert
         - loc
+        - memfd
         - partial-semigroup
         - path-text-utf8
         - stripe-concepts