diff --git a/build-constraints.yaml b/build-constraints.yaml
index ea12e7b7..cc5814cc 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1243,6 +1243,7 @@ packages:
         - auto
         - tagged-binary
         - typelits-witnesses
+        - prompt
 
     "Ian Duncan <ian@iankduncan.com> @iand675":
         - feature-flags