diff --git a/hecl/extern/boo b/hecl/extern/boo
index e62e8952b..aa7fce380 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit e62e8952b5bf9ae1679fd3ddf942165973b944de
+Subproject commit aa7fce38018bc4b2333b5487011209912b568dbd