diff --git a/build-constraints.yaml b/build-constraints.yaml
index 89d2ec5f..b628cbba 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8614,6 +8614,7 @@ expected-test-failures:
     - download # 0.3.2.7 https://github.com/fpco/stackage/issues/2811
     - duration # 0.2.0.0
     - ede # 0.3.3.0 hashable order dependent
+    - elinx-tree # https://github.com/commercialhaskell/stackage/issues/6996
     - fixed-vector-hetero # 0.6.1.1
     - generic-optics # 2.2.1.0 optimization output https://github.com/kcsongor/generic-lens/issues/133
     - github-types # https://github.com/commercialhaskell/stackage/issues/6549