diff --git a/build-constraints.yaml b/build-constraints.yaml
index a5d9b999..2db6921d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2454,6 +2454,9 @@ expected-test-failures:
     # Sent e-mail to maintainer
     - ListLike
 
+    # https://github.com/twittner/wai-predicates/issues/2
+    - wai-predicates
+
 # end of expected-test-failures