diff --git a/client-py3/full/linux/udsclient-template.spec b/client-py3/full/linux/udsclient-template.spec
index cea9e930..4b07ab7a 100644
--- a/client-py3/full/linux/udsclient-template.spec
+++ b/client-py3/full/linux/udsclient-template.spec
@@ -11,7 +11,7 @@ Release: %{release}
 Summary: Client for Universal Desktop Services (UDS) Broker
 License: BSD3
 Group: Applications/Productivity
-Requires: python3-six python3-requests python3-paramiko python3-qt5
+Requires: python3-six python3-requests python3-paramiko python3-qt5 python3-pycrypto
 Vendor: Virtual Cable S.L.U.
 URL: http://www.udsenterprise.com
 Provides: udsclient
diff --git a/client-py3/full/src/uds/rest.py b/client-py3/full/src/uds/rest.py
index 5857a427..10d0de72 100644
--- a/client-py3/full/src/uds/rest.py
+++ b/client-py3/full/src/uds/rest.py
@@ -34,6 +34,7 @@
 
 import json
 import urllib
+import urllib.parse
 
 from PyQt5.QtCore import pyqtSignal, pyqtSlot
 from PyQt5.QtCore import QObject, QUrl, QSettings
diff --git a/client-py3/full/src/uds/tools.py b/client-py3/full/src/uds/tools.py
index 72ffc535..5c4b93dd 100644
--- a/client-py3/full/src/uds/tools.py
+++ b/client-py3/full/src/uds/tools.py
@@ -72,7 +72,7 @@ nVgtClKcDDlSaBsO875WDR0CAwEAAQ==
 
 def saveTempFile(content, filename=None):
     if filename is None:
-        filename = b''.join(random.choice(string.ascii_lowercase + string.digits) for _ in range(16))
+        filename = ''.join(random.choice(string.ascii_lowercase + string.digits) for _ in range(16))
         filename = filename + '.uds'
 
     if 'win32' in sys.platform: