diff --git a/build-constraints.yaml b/build-constraints.yaml
index 75c9949d..390382ff 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1932,6 +1932,9 @@ skipped-tests:
     - uuid
     - uuid-types
 
+    # https://github.com/fpco/stackage/issues/934
+    - cacophony
+
     # Build error with lens-4.13
     # https://github.com/brendanhay/amazonka/issues/251
     - amazonka-ec2