diff --git a/build-constraints.yaml b/build-constraints.yaml
index 96f38c14..47640eec 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3114,7 +3114,7 @@ packages:
         - binary-bits
 
     "Alex McLean <alex@slab.org> @yaxu":
-        - tidal
+        - tidal < 1.9 # https://github.com/commercialhaskell/stackage/issues/6712
         - hosc
 
     "Kei Hibino <ex8k.hibino@gmail.com> @khibino":