diff --git a/hecl/extern/boo b/hecl/extern/boo
index 91734b5b2..b5f1657df 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 91734b5b2497e986aeeabb8f19d07999fca82c63
+Subproject commit b5f1657dffc83eb1a62a761a2b5c09e985e043ef