diff --git a/build-constraints.yaml b/build-constraints.yaml
index 4ce11ac1..3630bf42 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8821,6 +8821,7 @@ expected-test-failures:
     - sydtest-autodocodec # https://github.com/commercialhaskell/stackage/issues/7465
     - sydtest-yesod # 0.3.0.3 https://github.com/NorfairKing/sydtest/issues/101
     - tar-conduit # https://github.com/snoyberg/tar-conduit/issues/33
+    - unicode-data # 0.6.0 https://github.com/composewell/unicode-data/issues/137
     - vary # 0.1.1.3 doctest-0.4
     - xml-conduit # 1.10.0.0 https://github.com/snoyberg/xml/issues/204