diff --git a/.gitmodules b/.gitmodules
index af3e126e9..1b480d921 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,10 @@
+# beacon_chain
+# Copyright (c) 2019-2023 Status Research & Development GmbH
+# Licensed and distributed under either of
+#   * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
+#   * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 [submodule "vendor/nim-eth2-scenarios"]
 	path = vendor/nim-eth2-scenarios
 	url = https://github.com/status-im/nim-eth2-scenarios
@@ -57,7 +64,7 @@
 	path = vendor/nim-chronicles
 	url = https://github.com/status-im/nim-chronicles.git
 	ignore = untracked
-	branch = master
+	branch = nbc-1.5.3
 [submodule "vendor/nim-faststreams"]
 	path = vendor/nim-faststreams
 	url = https://github.com/status-im/nim-faststreams.git
diff --git a/vendor/nim-chronicles b/vendor/nim-chronicles
index 527b2bd3f..533022be6 160000
--- a/vendor/nim-chronicles
+++ b/vendor/nim-chronicles
@@ -1 +1 @@
-Subproject commit 527b2bd3f44a47af03d3d3c940348e0cb8826652
+Subproject commit 533022be6afee15800148a30b502b8ca9e327377