diff --git a/ChangeLog b/ChangeLog
index cb2c566..02fd600 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2023-11-09 Jan Kotanski <jankotan@gmail.com>
+	* change tango.Device_4Impl to tango.LatestDeviceImpl (#57)
+	* tagged as v2.15.0
+
 2023-09-23 Jan Kotanski <jankotan@gmail.com>
 	* send FATAL, WARN, and ERROR to stderr by default (#48)
 	* tagged as v2.14.3
diff --git a/nxsconfigserver/MYSQLDataBase.py b/nxsconfigserver/MYSQLDataBase.py
index ba6fd44..4d3947f 100644
--- a/nxsconfigserver/MYSQLDataBase.py
+++ b/nxsconfigserver/MYSQLDataBase.py
@@ -40,7 +40,7 @@ def __init__(self, streams=None):
 
         :brief: It creates the MYSQLDataBase instance
         :param streams: tango-like steamset class
-        :type streams: :class:`StreamSet` or :class:`tango.Device_4Impl`
+        :type streams: :class:`StreamSet` or :class:`tango.LatestDeviceImpl`
         """
         #: (:class:`MySQLdb.connections.Connection`) db instance
         self.__db = None
@@ -48,7 +48,7 @@ def __init__(self, streams=None):
         self.__args = None
         #: (:obj:`dict` <:obj:`str`, any>) connect arguments string
         self.__argstr = None
-        #: (:class:`StreamSet` or :class:`tango.Device_4Impl`) stream set
+        #: (:class:`StreamSet` or :class:`tango.LatestDeviceImpl`) stream set
         self._streams = streams
 
     def connect(self, args):
diff --git a/nxsconfigserver/NXSConfigServer.py b/nxsconfigserver/NXSConfigServer.py
index ea3dd14..221d9fe 100644
--- a/nxsconfigserver/NXSConfigServer.py
+++ b/nxsconfigserver/NXSConfigServer.py
@@ -44,7 +44,7 @@
 # ==================================================================
 
 
-class NXSConfigServer(tango.Device_4Impl):
+class NXSConfigServer(tango.LatestDeviceImpl):
 
     """   NXSConfigServer Class Description:
 
@@ -63,7 +63,7 @@ def __init__(self, cl, name):
         :param name: device name
         :type name: :obj:`str`
         """
-        tango.Device_4Impl.__init__(self, cl, name)
+        tango.LatestDeviceImpl.__init__(self, cl, name)
         self.debug_stream("In __init__()")
         #: (:class:`nxsconfigserver.XMLConfigutator.XMLConfigutator`) \
         #:    xml configurator instance
diff --git a/nxsconfigserver/Release.py b/nxsconfigserver/Release.py
index 8f8163c..fa0eba9 100644
--- a/nxsconfigserver/Release.py
+++ b/nxsconfigserver/Release.py
@@ -20,4 +20,4 @@
 """ release version module """
 
 #: version number
-__version__ = "2.14.3"
+__version__ = "2.15.0"
diff --git a/nxsconfigserver/StreamSet.py b/nxsconfigserver/StreamSet.py
index 4f8719c..305d648 100644
--- a/nxsconfigserver/StreamSet.py
+++ b/nxsconfigserver/StreamSet.py
@@ -37,7 +37,7 @@ def __init__(self, streams):
         """ streamset constractor
 
         :param streams: tango-like steamset class
-        :type streams: :class:`StreamSet` or :class:`tango.Device_4Impl`
+        :type streams: :class:`StreamSet` or :class:`tango.LatestDeviceImpl`
         """
 
         #: (:class:`tango.log4tango.TangoStream`) Tango fatal log stream
diff --git a/nxsconfigserver/XMLConfigurator.py b/nxsconfigserver/XMLConfigurator.py
index 2cbcb1f..377a4b8 100644
--- a/nxsconfigserver/XMLConfigurator.py
+++ b/nxsconfigserver/XMLConfigurator.py
@@ -78,11 +78,11 @@ def __init__(self, server=None):
         """ constructor
 
         :param server: NXSConfigServer instance
-        :type server: :class:`tango.Device_4Impl`
+        :type server: :class:`tango.LatestDeviceImpl`
         :brief: It allows to construct XML configurer object
 
         """
-        #: (:class:`StreamSet` or :class:`tango.Device_4Impl`) stream set
+        #: (:class:`StreamSet` or :class:`tango.LatestDeviceImpl`) stream set
         self._streams = StreamSet(weakref.ref(server) if server else None)
         #: (:obj:`str`) XML config string
         self.xmlstring = ""
@@ -125,7 +125,7 @@ def __init__(self, server=None):
         #: (:obj:`str`) version label
         self.versionLabel = "XCS"
 
-        #: (:class:`tango.Device_4Impl`) Tango server
+        #: (:class:`tango.LatestDeviceImpl`) Tango server
         self.__server = server
 
     @classmethod