diff --git a/build-constraints.yaml b/build-constraints.yaml
index f65c1a67..038b1de9 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3415,6 +3415,10 @@ packages:
         # https://github.com/fpco/stackage/issues/3330
         - one-liner < 1
 
+        # https://github.com/fpco/stackage/issues/3333
+        - llvm-hs < 6
+        - llvm-hs-pure < 6
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of