diff --git a/build-constraints.yaml b/build-constraints.yaml
index 337f3495..ac6e9d90 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1468,6 +1468,9 @@ expected-test-failures:
     # https://github.com/prowdsponsor/thumbnail-plus/issues/3
     - thumbnail-plus
 
+    # https://github.com/prowdsponsor/mangopay/issues/30
+    - mangopay
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4