diff --git a/hecl/extern/boo b/hecl/extern/boo
index 362a27b7f..543c686f8 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 362a27b7ff3ad6682d61eefc5b49191f6a205461
+Subproject commit 543c686f88d62693dd17250960b4a6d66e835491