diff --git a/hecl/extern/boo b/hecl/extern/boo
index 4ecea8ac3..4b969fd47 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 4ecea8ac3fc2c7253d2e6743fb58c5a12c0414c3
+Subproject commit 4b969fd475f06a4658b85bc2f0badfd3784e1d3d