diff --git a/build-constraints.yaml b/build-constraints.yaml
index 1bb83a51..6ab26733 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -727,7 +727,7 @@ packages:
         - turtle
         - foldl
         - morte
-        # - bench # turtle 1.5
+        - bench
         - dhall
         - dhall-bash
         - dhall-json