diff --git a/build-constraints.yaml b/build-constraints.yaml
index e1bf81c7..0394a028 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1412,6 +1412,9 @@ expected-test-failures:
     - bitcoin-api
     - bitcoin-api-extra
 
+    # https://github.com/ekmett/semigroupoids/issues/34
+    - semigroupoids
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4