diff --git a/build-constraints.yaml b/build-constraints.yaml
index 358f2669..dc7d3217 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8815,6 +8815,7 @@ expected-test-failures:
     - regex-tdfa # 1.3.2.4 doctest-0.4
     - free-foil # 0.2.0 doctest-0.4
     - vary # 0.1.1.3 doctest-0.4
+    - xml-conduit # 1.10.0.0 https://github.com/snoyberg/xml/issues/204
 
     # Intermittent failures or unreliable. These tests may pass when
     # re-enabled, but will eventually fail again.