diff --git a/modbus4mqtt/version.py b/modbus4mqtt/version.py
index 974881c..7a0c9fe 100644
--- a/modbus4mqtt/version.py
+++ b/modbus4mqtt/version.py
@@ -1 +1 @@
-version = "0.6.1"
+version = "0.7.0"
diff --git a/setup.py b/setup.py
index ad49f14..e8eec82 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
     packages=setuptools.find_packages(exclude=['tests']),
     install_requires=[
         'ruamel.yaml>=0.16.12',
-        'paho-mqtt>=1.5.0',
+        'paho-mqtt>=1.5.0,<2',
         'pymodbus>=2.3.0,<3.0.0',
         'click>=6.7',
         'SungrowModbusTcpClient>=0.1.6',