diff --git a/hecl/extern/boo b/hecl/extern/boo
index 315998381..e4c625c55 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 315998381c2f25976d38a86cae0d52820b3be402
+Subproject commit e4c625c55a82ed38bd9d53ba8ab7658de211306b