diff --git a/build-constraints.yaml b/build-constraints.yaml
index 09fe5962..7b825b45 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1094,7 +1094,8 @@ packages:
         - memcached-binary
 
     "Kai Zhang <kai@kzhang.org> @kaizhang":
-        - clustering
+        # https://github.com/kaizhang/clustering/issues/1
+        # - clustering
         - matrices
 
     "Stackage upper bounds":