diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3f71941b..4abb046d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5503,6 +5503,7 @@ expected-test-failures:
     - crypto-pubkey # https://github.com/vincenthz/hs-crypto-pubkey/issues/23
     - doctest-discover # 0.1.0.9 https://github.com/karun012/doctest-discover/issues/22
     - doctest
+    - hnix # https://github.com/commercialhaskell/stackage/issues/5469
 
     # Assertion failures, these can be real bugs or just limitations
     # in the test cases.