diff --git a/knowledge b/knowledge
index a661d15a3..d906d108c 160000
--- a/knowledge
+++ b/knowledge
@@ -1 +1 @@
-Subproject commit a661d15a353a7e5cf77180b1fd356b8b5d8d18d1
+Subproject commit d906d108ca9c2d5b91f859fea11607d188c2ffef