diff --git a/build-constraints.yaml b/build-constraints.yaml
index 93f4943d..5f2f2e38 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4763,7 +4763,7 @@ packages:
 
     "Ollie Charles <ollie@ocharles.org.up> @ocharles":
         - reactive-banana
-        - rel8
+        - rel8 < 0 # https://github.com/commercialhaskell/stackage/issues/6653
         - logging-effect
 
     "Grzegorz Milka <grzegorzmilka@gmail.com> @gregorias":