diff --git a/book/external/Sphinx-Grasple-public b/book/external/Sphinx-Grasple-public
index ce057a2..9f6f68a 160000
--- a/book/external/Sphinx-Grasple-public
+++ b/book/external/Sphinx-Grasple-public
@@ -1 +1 @@
-Subproject commit ce057a20bb234006ddebc80c9894842d125a5b1b
+Subproject commit 9f6f68a8eaf28952c996fa3604f9201e7c40f271