diff --git a/python-proton-client.changes b/python-proton-client.changes
index 9d50bfd..33dfa9a 100644
--- a/python-proton-client.changes
+++ b/python-proton-client.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Sep 25 14:52:52 UTC 2023 - Alexandre Vicenzi <alexandre.vicenzi@suse.com>
+
+- Add urllib3-v2-migration.patch to fix authentication errors.
+
 -------------------------------------------------------------------
 Tue Oct 26 19:05:45 UTC 2021 - Alexandre Vicenzi <alexandre.vicenzi@suse.com>
 
diff --git a/python-proton-client.spec b/python-proton-client.spec
index 1dce62f..c58bc43 100644
--- a/python-proton-client.spec
+++ b/python-proton-client.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-proton-client
 #
-# Copyright (c) 2021 SUSE LLC
+# Copyright (c) 2023 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -26,6 +26,7 @@ License:        GPL-3.0-or-later
 Group:          Development/Languages/Python
 URL:            https://github.com/ProtonMail/proton-python-client
 Source:         https://github.com/ProtonMail/proton-python-client/archive/refs/tags/%{version}.tar.gz#/proton-python-client-%{version}.tar.gz
+Patch1:         urllib3-v2-migration.patch
 BuildRequires:  %{python_module bcrypt}
 BuildRequires:  %{python_module gnupg}
 BuildRequires:  %{python_module pytest}
@@ -47,7 +48,7 @@ This package, originally forked from python-srp module implements a simple
 wrapper to Proton Technologies API, abstracting from the SRP authentication.
 
 %prep
-%setup -q -n proton-python-client-%{version}
+%autosetup -n proton-python-client-%{version} -p1
 
 %build
 %python_build
diff --git a/urllib3-v2-migration.patch b/urllib3-v2-migration.patch
new file mode 100644
index 0000000..972e48f
--- /dev/null
+++ b/urllib3-v2-migration.patch
@@ -0,0 +1,35 @@
+diff --git a/proton/cert_pinning.py b/proton/cert_pinning.py
+index e39298b..29aa048 100644
+--- a/proton/cert_pinning.py
++++ b/proton/cert_pinning.py
+@@ -18,7 +18,6 @@ class TLSPinningHTTPSConnectionPool(HTTPSConnectionPool):
+         host,
+         hash_dict,
+         port=None,
+-        strict=False,
+         timeout=Timeout.DEFAULT_TIMEOUT,
+         maxsize=1,
+         block=False,
+@@ -44,7 +43,6 @@ class TLSPinningHTTPSConnectionPool(HTTPSConnectionPool):
+             super(TLSPinningHTTPSConnectionPool, self).__init__(
+                 host,
+                 port,
+-                strict,
+                 timeout,
+                 maxsize,
+                 block,
+@@ -67,7 +65,6 @@ class TLSPinningHTTPSConnectionPool(HTTPSConnectionPool):
+             super(TLSPinningHTTPSConnectionPool, self).__init__(
+                 host,
+                 port,
+-                strict,
+                 timeout,
+                 maxsize,
+                 block,
+@@ -181,5 +178,5 @@ class TLSPinningAdapter(HTTPAdapter):
+     ):
+         self.poolmanager = TLSPinningPoolManager(
+             num_pools=connections, maxsize=maxsize, block=block,
+-            strict=True, hash_dict=self.hash_dict, **pool_kwargs
++            hash_dict=self.hash_dict, **pool_kwargs
+         )