diff --git a/build-constraints.yaml b/build-constraints.yaml
index f85b9353..65601d4f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -656,6 +656,8 @@ packages:
         - machines-directory
         - machines-io
         - machines-process
+        # on behalf of Bryan O'Sullivan @bos
+        - wreq 
     
     "Andraz Bajt andraz@bajt.me @edofic":
         - effect-handlers