diff --git a/hecl/extern/boo b/hecl/extern/boo
index 6c3a35f15..d04c19a25 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 6c3a35f15d06c84c7f7be9055993c14715323145
+Subproject commit d04c19a2580a0456aefc2fb1f377fabf0a503fd7