diff --git a/hecl/extern/boo b/hecl/extern/boo
index 4a2c32c2a..5b43b3152 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 4a2c32c2a97b03ee4b3fb195062833161fc0bbda
+Subproject commit 5b43b31529447482add3a441596910db16e0ce4c