diff --git a/hecl/extern/boo b/hecl/extern/boo
index bb227b9cc..27a455c61 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit bb227b9cc0634be6399c63be0706074951b81698
+Subproject commit 27a455c61dcaabab56f1ad1ab78fb8fb7f8b4d4e