diff --git a/build-constraints.yaml b/build-constraints.yaml
index b50d9748..0df7d338 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5309,7 +5309,7 @@ packages:
         - monad-logger
         - monad-loops
         - monad-time
-        - monadloc
+        - monadloc < 0 # https://github.com/pepeiborra/monadloc/issues/4
         - monads-tf
         - mono-traversable-instances
         - mono-traversable-keys