diff --git a/hecl/extern/boo b/hecl/extern/boo
index 89e4a18d0..7acefc6c6 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 89e4a18d0b6aae80e48d56bbf5eb0ddff0eba802
+Subproject commit 7acefc6c60f3a735c5adf913cd270ef7b1db904c