diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3f132569..604e599a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1052,7 +1052,7 @@ packages:
         - structured-haskell-mode
         - casa-client
         - casa-types
-        - jl
+        - jl < 0 # ghc-9.6
 
     "Alberto G. Corona <agocorona@gmail.com> @agocorona":
         - RefSerialize