diff --git a/hecl/extern/boo b/hecl/extern/boo
index 4a74a0ad7..89b0fa5cd 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 4a74a0ad7c03bb701c2be018dcc43555412251b0
+Subproject commit 89b0fa5cd66765dc616ea4c9ca2035e58ca9e8d5