diff --git a/build-constraints.yaml b/build-constraints.yaml
index 86c4da6d..36983b97 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -305,6 +305,8 @@ packages:
         - pid1
         - typed-process
         - say
+        - unliftio-core
+        - unliftio
 
         - fsnotify
         - hinotify