diff --git a/build-constraints.yaml b/build-constraints.yaml
index f9adb89d..19820e84 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1474,7 +1474,7 @@ packages:
     "Index Int <vlad.z.4096@gmail.com>":
         - transformers-lift
         - ether
-        # GHC 8 - union
+        - union
 
     "Stack Builders stackage@stackbuilders.com @stackbuilders":
         - atomic-write