diff --git a/.idea/revpicommander.iml b/.idea/revpicommander.iml
index ac68996..50dc2a4 100644
--- a/.idea/revpicommander.iml
+++ b/.idea/revpicommander.iml
@@ -9,4 +9,8 @@
     <orderEntry type="jdk" jdkName="Python 3.8" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
+  <component name="PackageRequirementsSettings">
+    <option name="versionSpecifier" value="Greater or equal (&gt;=x.y.z)" />
+    <option name="removeUnused" value="true" />
+  </component>
 </module>
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..b9ba7ee
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+PyQt5>=5.14.1
+revpimodio2>=2.5.6
+zeroconf>=0.24.4
\ No newline at end of file
diff --git a/revpicommander/avahisearch.py b/revpicommander/avahisearch.py
index d74c659..e575a2c 100644
--- a/revpicommander/avahisearch.py
+++ b/revpicommander/avahisearch.py
@@ -6,10 +6,9 @@ __license__ = "GPLv3"
 
 from os import name as osname
 from re import compile
-from socket import gethostbyname
 
 from PyQt5 import QtCore, QtGui, QtWidgets
-from zeroconf import ServiceBrowser, Zeroconf
+from zeroconf import IPVersion, ServiceBrowser, Zeroconf
 
 import helper
 import proginit as pi
@@ -62,11 +61,8 @@ class AvahiSearchThread(QtCore.QThread):
         if not info:
             return
 
-        try:
-            ip = gethostbyname(info.server)
-        except Exception:
-            ip = self.tr("N/A")
-        self.added.emit(name, info.server, info.port, conf_type, ip)
+        for ip in info.parsed_addresses(IPVersion.V4Only):
+            self.added.emit(name, info.server, info.port, conf_type, ip)
 
     def run(self):
         pi.logger.debug("Started zero conf discovery.")
diff --git a/revpicommander/debugios.py b/revpicommander/debugios.py
index e690afb..944b355 100644
--- a/revpicommander/debugios.py
+++ b/revpicommander/debugios.py
@@ -112,7 +112,8 @@ class DebugIos(QtWidgets.QMainWindow, Ui_win_debugios):
 
         self.splitter.setSizes([1, 1])
 
-    def _create_widget(self, name: str, byte_length: int, bit_address: int, byteorder: str, signed: bool, read_only: bool):
+    def _create_widget(
+            self, name: str, byte_length: int, bit_address: int, byteorder: str, signed: bool, read_only: bool):
         """Create widget in functions address space to use lambda functions."""
         if bit_address >= 0:
             val = QtWidgets.QCheckBox()
diff --git a/revpicommander/revpicommander.py b/revpicommander/revpicommander.py
index 1ac91a9..bd8c41e 100755
--- a/revpicommander/revpicommander.py
+++ b/revpicommander/revpicommander.py
@@ -477,8 +477,8 @@ class RevPiCommander(QtWidgets.QMainWindow, Ui_win_revpicommander):
 if __name__ == "__main__":
     import sys
 
-    #QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling, True)
-    #QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_UseHighDpiPixmaps, True)
+    # QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling, True)
+    # QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_UseHighDpiPixmaps, True)
 
     app = QtWidgets.QApplication(sys.argv)
 
diff --git a/revpicommander/revpilogfile.py b/revpicommander/revpilogfile.py
index 5e22b6d..d45bbe7 100644
--- a/revpicommander/revpilogfile.py
+++ b/revpicommander/revpilogfile.py
@@ -20,7 +20,6 @@ class LogType(IntEnum):
 
 
 class DataThread(QtCore.QThread):
-
     error_detected = QtCore.pyqtSignal(str)
     line_logged = QtCore.pyqtSignal(LogType, bool, str)
 
diff --git a/revpicommander/revpiprogram.py b/revpicommander/revpiprogram.py
index c9b8ba1..8abe674 100644
--- a/revpicommander/revpiprogram.py
+++ b/revpicommander/revpiprogram.py
@@ -9,7 +9,7 @@ import os
 import tarfile
 import zipfile
 from shutil import rmtree
-from tempfile import mkdtemp, mkstemp
+from tempfile import mkdtemp
 from xmlrpc.client import Binary
 
 from PyQt5 import QtCore, QtGui, QtWidgets
@@ -174,7 +174,7 @@ class RevPiProgram(QtWidgets.QDialog, Ui_diag_program):
 
         self._load_settings()
         self._apply_acl()
-        
+
         return super(RevPiProgram, self).exec()
 
     def reject(self) -> None: