diff --git a/core b/core
index 6fc2e00..a640257 160000
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 6fc2e001acd72f7a8ecfcf615338fc2523e4e894
+Subproject commit a640257dbff03d8fd8c94c1db4e345cfe9ab168c