diff --git a/build-constraints.yaml b/build-constraints.yaml
index ceebb11a..c657a52f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4543,7 +4543,7 @@ packages:
         - multi-containers
 
     "Vaclav Svejcar <vaclav.svejcar@gmail.com> @vaclavsvejcar":
-        - headroom
+        - headroom < 0 # https://github.com/commercialhaskell/stackage/issues/6342
         - vcs-ignore
 
     "Adrian Sieber <stackage@ad-si.com> @ad-si":