diff --git a/build-constraints.yaml b/build-constraints.yaml
index bff07903..08077dab 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -956,6 +956,9 @@ expected-test-failures:
     # https://github.com/bos/wreq/issues/53
     - wreq
 
+    # https://github.com/vincenthz/tasty-kat/issues/1
+    - tasty-kat
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4