diff --git a/hecl/extern/boo b/hecl/extern/boo
index 7eda81e55..6d3e97e95 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 7eda81e55eb6fd454104ce12d7081d41bf38d86c
+Subproject commit 6d3e97e95911174586ca6cddb8fabf8d08337263