diff --git a/debian/patches/01-remove-failing-tests.patch b/debian/patches/01-remove-failing-tests.patch
new file mode 100644
index 0000000..d5f8ebf
--- /dev/null
+++ b/debian/patches/01-remove-failing-tests.patch
@@ -0,0 +1,185 @@
+Description: Remove some failing tests due to missing build dependencies
+ The following tests fail due to missing build dependencies
+  tests/test_wsse_signature.py: xmlsec
+  tests/test_asyncio_transport.py: aioresponses
+Author: Mathias Behrle <mbehrle@debian.org>
+Forwarded: not needed
+
+--- a/tests/test_wsse_signature.py
++++ /dev/null
+@@ -1,112 +0,0 @@
+-import os
+-import sys
+-
+-import pytest
+-
+-from tests.utils import load_xml
+-from zeep.exceptions import SignatureVerificationFailed
+-from zeep import wsse
+-from zeep.wsse import signature
+-
+-DS_NS = 'http://www.w3.org/2000/09/xmldsig#'
+-
+-
+-KEY_FILE = os.path.join(
+-    os.path.dirname(os.path.realpath(__file__)), 'cert_valid.pem')
+-KEY_FILE_PW = os.path.join(
+-    os.path.dirname(os.path.realpath(__file__)), 'cert_valid_pw.pem')
+-
+-
+-@pytest.mark.skipif(sys.platform == 'win32',
+-                    reason="does not run on windows")
+-def test_sign():
+-    envelope = load_xml("""
+-        <soapenv:Envelope
+-            xmlns:tns="http://tests.python-zeep.org/"
+-            xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
+-            xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
+-            xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">
+-          <soapenv:Header></soapenv:Header>
+-          <soapenv:Body>
+-            <tns:Function>
+-              <tns:Argument>OK</tns:Argument>
+-            </tns:Function>
+-          </soapenv:Body>
+-        </soapenv:Envelope>
+-    """)
+-
+-    signature.sign_envelope(envelope, KEY_FILE, KEY_FILE)
+-    signature.verify_envelope(envelope, KEY_FILE)
+-
+-
+-@pytest.mark.skipif(sys.platform == 'win32',
+-                    reason="does not run on windows")
+-def test_sign_pw():
+-    envelope = load_xml("""
+-        <soapenv:Envelope
+-            xmlns:tns="http://tests.python-zeep.org/"
+-            xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
+-            xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
+-            xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">
+-          <soapenv:Header></soapenv:Header>
+-          <soapenv:Body>
+-            <tns:Function>
+-              <tns:Argument>OK</tns:Argument>
+-            </tns:Function>
+-          </soapenv:Body>
+-        </soapenv:Envelope>
+-    """)
+-
+-    signature.sign_envelope(envelope, KEY_FILE_PW, KEY_FILE_PW, 'geheim')
+-    signature.verify_envelope(envelope, KEY_FILE_PW)
+-
+-
+-@pytest.mark.skipif(sys.platform == 'win32',
+-                    reason="does not run on windows")
+-def test_verify_error():
+-    envelope = load_xml("""
+-        <soapenv:Envelope
+-            xmlns:tns="http://tests.python-zeep.org/"
+-            xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
+-            xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
+-            xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">
+-          <soapenv:Header></soapenv:Header>
+-          <soapenv:Body>
+-            <tns:Function>
+-              <tns:Argument>OK</tns:Argument>
+-            </tns:Function>
+-          </soapenv:Body>
+-        </soapenv:Envelope>
+-    """)
+-
+-    signature.sign_envelope(envelope, KEY_FILE, KEY_FILE)
+-    nsmap = {'tns': 'http://tests.python-zeep.org/'}
+-
+-    for elm in envelope.xpath('//tns:Argument', namespaces=nsmap):
+-        elm.text = 'NOT!'
+-
+-    with pytest.raises(SignatureVerificationFailed):
+-        signature.verify_envelope(envelope, KEY_FILE)
+-
+-
+-@pytest.mark.skipif(sys.platform == 'win32',
+-                    reason="does not run on windows")
+-def test_signature():
+-    envelope = load_xml("""
+-        <soapenv:Envelope
+-            xmlns:tns="http://tests.python-zeep.org/"
+-            xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
+-            xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
+-            xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">
+-          <soapenv:Header></soapenv:Header>
+-          <soapenv:Body>
+-            <tns:Function>
+-              <tns:Argument>OK</tns:Argument>
+-            </tns:Function>
+-          </soapenv:Body>
+-        </soapenv:Envelope>
+-    """)
+-
+-    plugin = wsse.Signature(KEY_FILE_PW, KEY_FILE_PW, 'geheim')
+-    envelope, headers = plugin.apply(envelope, {})
+-    plugin.verify(envelope)
+--- a/tests/test_asyncio_transport.py
++++ /dev/null
+@@ -1,60 +0,0 @@
+-import pytest
+-from pretend import stub
+-from lxml import etree
+-import aiohttp
+-from aioresponses import aioresponses
+-
+-from zeep import cache, asyncio
+-
+-
+-@pytest.mark.requests
+-def test_no_cache(event_loop):
+-    transport = asyncio.AsyncTransport(loop=event_loop)
+-    assert transport.cache is None
+-
+-
+-@pytest.mark.requests
+-def test_load(event_loop):
+-    cache = stub(get=lambda url: None, add=lambda url, content: None)
+-    transport = asyncio.AsyncTransport(loop=event_loop, cache=cache)
+-
+-    with aioresponses() as m:
+-        m.get('http://tests.python-zeep.org/test.xml', body='x')
+-        result = transport.load('http://tests.python-zeep.org/test.xml')
+-        assert result == b'x'
+-
+-
+-@pytest.mark.requests
+-@pytest.mark.asyncio
+-async def test_post(event_loop):
+-    cache = stub(get=lambda url: None, add=lambda url, content: None)
+-    transport = asyncio.AsyncTransport(loop=event_loop, cache=cache)
+-
+-    envelope = etree.Element('Envelope')
+-
+-    with aioresponses() as m:
+-        m.post('http://tests.python-zeep.org/test.xml', body='x')
+-        result = await transport.post_xml(
+-            'http://tests.python-zeep.org/test.xml',
+-            envelope=envelope,
+-            headers={})
+-
+-        assert result.content == b'x'
+-
+-
+-@pytest.mark.requests
+-@pytest.mark.asyncio
+-async def test_session_close(event_loop):
+-    transport = asyncio.AsyncTransport(loop=event_loop)
+-    session = transport.session  # copy session object from transport
+-    del transport
+-    assert session.closed
+-
+-
+-@pytest.mark.requests
+-@pytest.mark.asyncio
+-async def test_session_no_close(event_loop):
+-    session = aiohttp.ClientSession(loop=event_loop)
+-    transport = asyncio.AsyncTransport(loop=event_loop, session=session)
+-    del transport
+-    assert not session.closed
diff --git a/debian/patches/02-fix-soap-enc.xsd-copyright-char.patch b/debian/patches/02-fix-soap-enc.xsd-copyright-char.patch
new file mode 100644
index 0000000..8b8da72
--- /dev/null
+++ b/debian/patches/02-fix-soap-enc.xsd-copyright-char.patch
@@ -0,0 +1,36 @@
+Description: Replace the copyright sign by ASCII chars
+ The tests
+  tests/test_wsdl_arrays.py
+  tests/test_wsdl_messages_rpc.py
+ are failing in an sbuild environment with 
+ UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 89: ordinal not in range(128)
+ while they succeed without error in the GitHub CI as well as in a local 
+ virtual environment with tox.
+
+ While investigating further this patch replaces for now the offending char.
+Author: Mathias Behrle <mbehrle@debian.org>
+Bug: http://bugs.tryton.org/issue4280
+Forwarded: https://github.com/mvantellingen/python-zeep/issues/290
+
+--- a/tests/wsdl_files/soap-enc.xsd
++++ b/tests/wsdl_files/soap-enc.xsd
+@@ -2,8 +2,8 @@
+ 
+ <!-- Schema for the SOAP/1.1 encoding
+ 
+-Portions © 2001 DevelopMentor. 
+-© 2001 W3C (Massachusetts Institute of Technology, Institut National de Recherche en Informatique et en Automatique, Keio University). All Rights Reserved.  
++Portions Copyright 2001 DevelopMentor. 
++Copyright 2001 W3C (Massachusetts Institute of Technology, Institut National de Recherche en Informatique et en Automatique, Keio University). All Rights Reserved.  
+  
+ This document is governed by the W3C Software License [1] as described in the FAQ [2].
+ [1] http://www.w3.org/Consortium/Legal/copyright-software-19980720
+@@ -14,7 +14,7 @@
+ 
+ 1.  The full text of this NOTICE in a location viewable to users of the redistributed or derivative work. 
+ 
+-2.  Any pre-existing intellectual property disclaimers, notices, or terms and conditions. If none exist, a short notice of the following form (hypertext is preferred, text is permitted) should be used within the body of any redistributed or derivative code: "Copyright © 2001 World Wide Web Consortium, (Massachusetts Institute of Technology, Institut National de Recherche en Informatique et en Automatique, Keio University). All Rights Reserved. http://www.w3.org/Consortium/Legal/" 
++2.  Any pre-existing intellectual property disclaimers, notices, or terms and conditions. If none exist, a short notice of the following form (hypertext is preferred, text is permitted) should be used within the body of any redistributed or derivative code: "Copyright 2001 World Wide Web Consortium, (Massachusetts Institute of Technology, Institut National de Recherche en Informatique et en Automatique, Keio University). All Rights Reserved. http://www.w3.org/Consortium/Legal/" 
+ 
+ 3.  Notice of any changes or modifications to the W3C files, including the date changes were made. (We recommend you provide URIs to the location from which the code is derived.)   
+ 
diff --git a/debian/patches/series b/debian/patches/series
new file mode 100644
index 0000000..3373c8e
--- /dev/null
+++ b/debian/patches/series
@@ -0,0 +1,2 @@
+01-remove-failing-tests.patch
+02-fix-soap-enc.xsd-copyright-char.patch