diff --git a/build-constraints.yaml b/build-constraints.yaml
index 70f37fa9..b062e0c6 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2265,6 +2265,9 @@ expected-test-failures:
 
     # https://github.com/chrisdone/sourcemap/issues/3
     - sourcemap
+
+    # https://github.com/yesodweb/yesod/issues/1128
+    - yesod-core
 # end of expected-test-failures