diff --git a/hecl/extern/boo b/hecl/extern/boo
index 83f55a54d..d047a37e2 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 83f55a54d9abdac3d9f25893a53147798fcce864
+Subproject commit d047a37e2b97ecc8158680b6ca192c6175b270fb