diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3e171ee2..70c35b9c 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -313,8 +313,8 @@ packages:
 
     "Pasqualino Assini <tittoassini@gmail.com> @tittoassini":
         # - zm
-        # - flat # fails to build
-        - model < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
+        - flat
+        - model
 
     "Jose Iborra <pepeiborra@gmail.com> @pepeiborra":
         # - arrowp-qq # build failure https://github.com/pepeiborra/arrowp/issues/8