diff --git a/build-constraints.yaml b/build-constraints.yaml
index 622bc87a..61f22122 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3576,7 +3576,7 @@ packages:
         - printcess
 
     "Alexey Kuleshevich <lehins@yandex.ru> @lehins":
-        - wai-middleware-auth
+        - wai-middleware-auth < 0  # fails to build, https://github.com/commercialhaskell/stackage/issues/6436
         - hip
         - massiv
         - massiv-io