diff --git a/build-constraints.yaml b/build-constraints.yaml
index 9e729998..fdce3de2 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4989,7 +4989,7 @@ packages:
         - byte-order
         - byteable
         - bytehash
-        - bytesmith
+        - bytesmith < 0 # fails to build with ghc-9.4
         - bytestring-builder
         - bzlib
         - c2hs