diff --git a/build-constraints.yaml b/build-constraints.yaml
index f446af3d..9c1a20b2 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3558,7 +3558,6 @@ packages:
         - distributed-process < 0 # GHC 8.4 via network-transport-tcp
         - distributed-process-lifted < 0 # GHC 8.4 via network-transport-tcp
         - distributed-process-simplelocalnet < 0 # GHC 8.4 via network-transport-tcp
-        # xxhash-ffi < 0 # GHC 8.4 via xxhash
 
         # transitive failures, gen 2
         - MFlow < 0 # GHC 8.4 via RefSerialize
@@ -4653,6 +4652,7 @@ skipped-benchmarks:
     # ghc 8.4 outdated dependencies
     - buffer-builder # ghc 8.4 via json-builder build failure
     - psqueues # ghc 8.4 via PSQueue build failure
+    - xxhash-ffi # ghc 8.4 via xxhash build failure
 
     # Transitive outdated dependencies
     # These packages