diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8fd04b6a..79d42bd1 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2134,6 +2134,7 @@ packages:
 
         # https://github.com/fpco/stackage/issues/1266
         - transformers-compat < 0.5
+        # Re-enable bifunctor haddocks when this upper bound is lifted
         - bifunctors < 5.2.1
         - text-show < 3