diff --git a/hecl/extern/boo b/hecl/extern/boo
index 2b6d0cbb1..4b064a58f 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 2b6d0cbb1c5817eb7de1f60fbcfd3e006145d464
+Subproject commit 4b064a58f21e13dd7ddcb5b90b2cf756e850c1ce