diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2a9c2cc0..d64494bd 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1436,6 +1436,9 @@ expected-test-failures:
     # https://github.com/MichaelXavier/cron/issues/13
     - cron
 
+    # No PhantomJS available
+    - wai-cors
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4