diff --git a/build-constraints.yaml b/build-constraints.yaml
index fb40f6ef..3aea06d0 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3663,6 +3663,8 @@ expected-test-failures:
     - xml-picklers # https://github.com/Philonous/xml-picklers/issues/5
     - throwable-exceptions # https://github.com/aiya000/hs-throwable-exceptions/issues/2
     - shikensu # https://github.com/icidasset/shikensu/issues/5
+    - cacophony # https://github.com/centromere/cacophony/issues/5
+    - pipes-cacophony # https://github.com/centromere/pipes-cacophony/issues/3
 
     # Compilation failures
     - ListLike # No issue tracker, e-mail sent to maintainer