diff --git a/hecl/extern/boo b/hecl/extern/boo
index e48f5d36c..53f4e32c4 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit e48f5d36c748345f563d0fb4b7203a674bf8e8e0
+Subproject commit 53f4e32c46bc46fdce007f3c4d36932ce997bf4f