diff --git a/build-constraints.yaml b/build-constraints.yaml
index 6495d898..0bbf6c13 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4778,7 +4778,7 @@ packages:
         - msgpack
         - msgpack-rpc
         - msgpack-idl
-        - msgpack-aeson
+        - msgpack-aeson < 0 # https://github.com/commercialhaskell/stackage/issues/7135
         - int-cast
 
     "Akihito Kirisaki <kirisaki@klaraworks.net> @kirisaki":