diff --git a/build-constraints.yaml b/build-constraints.yaml
index 6f66d550..d5dae740 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1688,9 +1688,6 @@ skipped-tests:
     # https://github.com/kaizhang/clustering/issues/2
     - clustering
 
-    # https://github.com/fpco/stackage/issues/668
-    - second-transfer
-
     # tasty < 0.11
     # https://github.com/fpco/stackage/issues/817
     - tar