diff --git a/doc/solutions b/doc/solutions
index c6ce58d..9e4c957 160000
--- a/doc/solutions
+++ b/doc/solutions
@@ -1 +1 @@
-Subproject commit c6ce58d6e3d306c210de2843c8f080e86a9c2187
+Subproject commit 9e4c957f24a7aee0e000070ea345282e9560503e