diff --git a/build-constraints.yaml b/build-constraints.yaml
index acdd5a65..648bf853 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -769,6 +769,8 @@ packages:
 
         # https://github.com/fpco/stackage/issues/442
         - blaze-builder < 0.4
+
+        # https://github.com/fpco/stackage/issues/487
         - blaze-markup < 0.7
         - blaze-html < 0.8