diff --git a/hecl/extern/boo b/hecl/extern/boo
index 4b064a58f..bffdf43f9 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 4b064a58f21e13dd7ddcb5b90b2cf756e850c1ce
+Subproject commit bffdf43f9e0870a6ff3494568281eb05ac4eba0b