diff --git a/library.properties b/library.properties
index a1ac53d..d1a1d79 100644
--- a/library.properties
+++ b/library.properties
@@ -5,7 +5,7 @@ sentence=Library enables you to connect the device to the SUPLA automation syste
 paragraph=It provides easy interface for adding various sensors, relays, buttons, roller shutters, etc. that can be controlled via SUPLA Cloud and application on mobile device. 
 url=https://github.com/SUPLA/supla-arduino
 architectures=avr,esp32,esp8266
-version=2.3.5
+version=2.4.0
 dependencies=
 core-dependencies=arduino (>=1.5.0)
 category=Communication
diff --git a/src/SuplaDevice.cpp b/src/SuplaDevice.cpp
index 0d1fd94..15bf0de 100644
--- a/src/SuplaDevice.cpp
+++ b/src/SuplaDevice.cpp
@@ -182,7 +182,7 @@ bool SuplaDeviceClass::begin(unsigned char version) {
 
   if (strnlen(Supla::Channel::reg_dev.SoftVer, SUPLA_SOFTVER_MAXSIZE) == 0) {
     setString(Supla::Channel::reg_dev.SoftVer,
-              "User SW, lib 2.3.5",
+              "User SW, lib 2.4.0",
               SUPLA_SOFTVER_MAXSIZE);
   }