diff --git a/NEWS b/NEWS
index 7276a7f1..58ad0615 100644
--- a/NEWS
+++ b/NEWS
@@ -1,13 +1,13 @@
 -------------------------------------------------------------------------------
 
-$Id$
-
 vim: spelllang=en spell tw=78
 
 -------------------------------------------------------------------------------
 
-Changes since 1.5.2:
+Changes in 1.5.3:
 
+* Added the ecrt_slave_config_flag() to the application interface.
+* Added SoE IDN requests in application interface.
 * Fixed FoE timeout calculation bug.
 
 Changes in 1.5.2:
diff --git a/configure.ac b/configure.ac
index f9b9d94b..204c027d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 #------------------------------------------------------------------------------
 #
-#  Copyright (C) 2006-2023  Florian Pose, Ingenieurgemeinschaft IgH
+#  Copyright (C) 2006-2024  Florian Pose, Ingenieurgemeinschaft IgH
 #
 #  This file is part of the IgH EtherCAT Master.
 #
@@ -37,7 +37,7 @@ AC_PREREQ(2.59)
 # - Update version number below
 # - make dist-bzip2
 #
-AC_INIT([ethercat],[1.5.2],[fp@igh.de])
+AC_INIT([ethercat],[1.5.3],[fp@igh.de])
 AC_CONFIG_AUX_DIR([autoconf])
 AM_INIT_AUTOMAKE([-Wall -Wno-override -Werror dist-bzip2 subdir-objects foreign])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
diff --git a/include/ecrt.h b/include/ecrt.h
index 6978a37d..1d465972 100644
--- a/include/ecrt.h
+++ b/include/ecrt.h
@@ -37,7 +37,7 @@
  * request a master, to map process data, to communicate with slaves via CoE
  * and to configure and activate the bus.
  *
- * Changes since version 1.5.2:
+ * Changes in version 1.5.3:
  *
  * - Added the ecrt_slave_config_flag() method and the EC_HAVE_FLAGS
  *   definition to check for its existence.