diff --git a/hecl/extern/boo b/hecl/extern/boo
index ceedda9e1..ac98d6eac 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit ceedda9e1f48c40448c6bb6a3db7cabb8d2328b4
+Subproject commit ac98d6eac29e3aa90dad78803cbf472dc4fced5b