diff --git a/hecl/extern/boo b/hecl/extern/boo
index 7eda81e55..c5f8a1185 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 7eda81e55eb6fd454104ce12d7081d41bf38d86c
+Subproject commit c5f8a1185054265ac0c9c93bfc1b5e1b57fd0d67