diff --git a/core_io b/core_io
index ec3c6cc71a156e6f7ff174ebf9cc7d6847799afb..b120854ab81b86d2b52bd8a8b620fbdeed6d0bad 160000
--- a/core_io
+++ b/core_io
@@ -1 +1 @@
-Subproject commit ec3c6cc71a156e6f7ff174ebf9cc7d6847799afb
+Subproject commit b120854ab81b86d2b52bd8a8b620fbdeed6d0bad