diff --git a/build-constraints.yaml b/build-constraints.yaml
index 65a2e170..746f3f66 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4362,6 +4362,9 @@ packages:
     "Hideaki Kawai  <kayhide@gmail.com> @kayhide":
         - wakame
 
+    "Michael Williams <mlcfp@icloud.com> @mlcfp":
+        - zenacy-html
+
     "Grandfathered dependencies":
         - network
         - Boolean