diff --git a/hecl/extern/boo b/hecl/extern/boo
index 88cc539f1..a1209cdad 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 88cc539f16a6cb5d29f9207783a8bbd00ac29ee8
+Subproject commit a1209cdad7321c8c2d1de8c43bf0f6b0aac7f1c8