diff --git a/build-constraints.yaml b/build-constraints.yaml
index dedfeee4..8a0ffcc2 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1712,6 +1712,9 @@ expected-test-failures:
     # https://github.com/alphaHeavy/lzma-conduit/issues/5
     - lzma-conduit
 
+    # https://github.com/well-typed/ixset-typed/issues/2
+    - ixset-typed
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4