diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7ffeb991..f3b85014 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2155,6 +2155,10 @@ packages:
         - fold-debounce-conduit
         - stopwatch
 
+    "Cies Breijs <cies@kde.nl> @cies":
+        - htoml
+
+
     # If you stop maintaining a package you can move it here.
     # It will then be disabled if it starts causing problems.
     # See https://github.com/fpco/stackage/issues/1056