diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3a8ddf00..4755296b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3347,6 +3347,7 @@ packages:
     "typeable.io <makeit@typeable.io>":
         - dom-parser
         - stackage2nix
+        - xml-isogen
 
     "Jeremy Huffman <jeremy@jeremyhuffman.com> @jeremyjh":
         - higher-leveldb