diff --git a/hecl/extern/boo b/hecl/extern/boo
index 5cff0c19b..0121d355c 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 5cff0c19bd62ad160214c1a1c0f56eed1a3e9dca
+Subproject commit 0121d355c4ccceb477c5a3ed83658c6c220212ee