diff --git a/build-constraints.yaml b/build-constraints.yaml
index 374a4447..297ad7e2 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7445,6 +7445,7 @@ expected-test-failures:
     - hsini
     - htoml
     - hweblib # https://github.com/aycanirican/hweblib/issues/3
+    - LambdaHack # https://github.com/commercialhaskell/stackage/issues/6276
     - leveldb-haskell
     - mono-traversable
     - multiarg