diff --git a/modbus4mqtt/version.py b/modbus4mqtt/version.py
index c33826f..abe1e1c 100644
--- a/modbus4mqtt/version.py
+++ b/modbus4mqtt/version.py
@@ -1 +1 @@
-version="0.5.0"
+version = "0.5.1"
diff --git a/requirements.txt b/requirements.txt
index 46c609d..b54ed14 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,4 @@ ruamel.yaml>=0.16.12
 click
 paho-mqtt
 pymodbus
-SungrowModbusTcpClient>=0.1.5
\ No newline at end of file
+SungrowModbusTcpClient>=0.1.6
\ No newline at end of file
diff --git a/setup.py b/setup.py
index e248096..70546b3 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@
         'paho-mqtt>=1.5.0',
         'pymodbus>=2.3.0',
         'click>=6.7',
-        'SungrowModbusTcpClient>=0.1.5',
+        'SungrowModbusTcpClient>=0.1.6',
     ],
     tests_require=[
         'nose2>=0.9.2',