diff --git a/build-constraints.yaml b/build-constraints.yaml
index 0fcc228f..47d113e1 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1566,6 +1566,7 @@ packages:
 
     "Justin Le <justin@jle.im> @mstksg":
         - auto
+        - backprop
         - configurator-export
         - hamilton
         - prompt