diff --git a/build-constraints.yaml b/build-constraints.yaml
index f862a53c..677cf6b9 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2733,6 +2733,9 @@ packages:
         # https://github.com/fpco/stackage/issues/2136
         - X11 < 1.7
 
+        # https://github.com/fpco/stackage/issues/2161
+        - cacophony < 0.9.0
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of