diff --git a/hecl/extern/boo b/hecl/extern/boo
index 77507459c..7756fcaf7 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 77507459cc38adafb5bc5286f9b81804f9e82bcc
+Subproject commit 7756fcaf7617ad6067bfe894e3a3e1c58bc2ce4d