diff --git a/build-constraints.yaml b/build-constraints.yaml
index b1f8ef16..c4af9f93 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7326,6 +7326,9 @@ packages:
         - warp < 3.3.22
         - warp-tls < 3.3.3
 
+        # https://github.com/commercialhaskell/stackage/issues/6684
+        - ghc-lib < 9.4.1.20220807
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of