diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5d0ffa4d..6074f560 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4683,7 +4683,7 @@ packages:
         - singleton-bool
         - size-based < 0 # ghc 8.10
         - skein
-        - skylighting-core
+        - skylighting-core < 0.9 # https://github.com/commercialhaskell/stackage/issues/5559
         - snap-core
         - some
         - special-values