diff --git a/hecl/extern/boo b/hecl/extern/boo
index d309f124b..7463426fe 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit d309f124b95c7526ed30041c1a9aa281151b08b9
+Subproject commit 7463426fe615625e5964de9c2a04ae708689235d