diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 9f8d92b..21c4ec8 160000
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 9f8d92bde51a5c567a4d60011c4dec11661b338b
+Subproject commit 21c4ec8b086518efaed060f15d76588bfcbf1664