diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5d7303e7..0459bcb0 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2458,3 +2458,9 @@ github-users:
         - stepcut
 
 # end of github-users
+
+# Useful for checking for strict upper bounds against new versions of core
+# packages, e.g. when a new version of transformers is released
+#
+# treat-as-non-core:
+# - transformers