diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8f3dbf65..4610c75a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1,6 +1,10 @@
 ghc-major-version: "8.0"
 # Constraints for brand new builds
 packages:
+
+    "Jeremy Barisch-Rooney <barischj@tcd.ie> @barischj":
+       - threepenny-gui-flexbox
+       
     "Romain Edelmann <romain.edelmann@gmail.com> @redelmann":
         - distribution