diff --git a/build-constraints.yaml b/build-constraints.yaml
index 18849262..c3cd2a39 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1766,6 +1766,7 @@ packages:
         - from-sum
         - hailgun
         # GHC 8 - ig
+        - hailgun
         - natural-transformation
         - opaleye-trans
         - read-env-var