diff --git a/hecl/extern/boo b/hecl/extern/boo
index 4fb95046a..b5050159c 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 4fb95046a8add3a7c1c45f842880cc2ee429201d
+Subproject commit b5050159c4c5799e4541486c709e1c93a3651b9f