:art: vector(s) improvement

diff --git a/util b/util
index 61b99ae6fabebb32296a84c8fe178c24a5660405..8b2644578a7489ef9c8d87cd19a6326fb775fd3f 160000 (submodule)
--- a/util
+++ b/util
@@ -1 +1 @@
-Subproject commit 61b99ae6fabebb32296a84c8fe178c24a5660405
+Subproject commit 8b2644578a7489ef9c8d87cd19a6326fb775fd3f