diff --git a/18.1.0.tar.gz b/18.1.0.tar.gz
deleted file mode 100644
index 40603ac..0000000
--- a/18.1.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:695df7b4ffe00e232ac3887ed347615611d0a9c74074f8832c7eb191f70d2c40
-size 34252
diff --git a/21.1.0.tar.gz b/21.1.0.tar.gz
new file mode 100644
index 0000000..93f12cf
--- /dev/null
+++ b/21.1.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:541294ad6060c10e28554f36bb1c154e11f71ad3e23a160eea62eff9bf50522c
+size 35326
diff --git a/python-service_identity.changes b/python-service_identity.changes
index ec9c458..fb0412d 100644
--- a/python-service_identity.changes
+++ b/python-service_identity.changes
@@ -1,3 +1,21 @@
+-------------------------------------------------------------------
+Mon Feb  7 14:27:56 UTC 2022 - Matej Cepl <mcepl@suse.com>
+
+- Update to 21.1.0:
+  - Python 3.4 is not supported anymore. It has been unsupported
+    by the Python core team for a while now, its PyPI downloads
+    are negligible, and our CI provider removed it as a supported
+    option.
+  - It's very unlikely that service-identity will break under 3.4
+    anytime soon, which is why we do not block its installation
+    on Python 3.4. But we don't test it anymore and will block it
+    once someone reports breakage.
+  - service_identity.exceptions.VerificationError can now be
+    pickled and is overall more well-behaved as an exception.
+    This raises the requirement of attrs to 19.1.0.
+- This package actually truly requires six (it is expected to
+  work with Python 2.7 as well).
+
 -------------------------------------------------------------------
 Thu Mar 12 07:32:33 UTC 2020 - Tomáš Chvátal <tchvatal@suse.com>
 
diff --git a/python-service_identity.spec b/python-service_identity.spec
index b286710..22c78c0 100644
--- a/python-service_identity.spec
+++ b/python-service_identity.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-service_identity
 #
-# Copyright (c) 2020 SUSE LLC
+# Copyright (c) 2022 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -19,7 +19,7 @@
 %{?!python_module:%define python_module() python-%{**} python3-%{**}}
 %define oname   service_identity
 Name:           python-service_identity
-Version:        18.1.0
+Version:        21.1.0
 Release:        0
 Summary:        Service identity verification for pyOpenSSL
 License:        MIT
@@ -27,7 +27,7 @@ Group:          Development/Languages/Python
 URL:            https://github.com/pyca/service_identity
 # no tests in upstream tarball
 Source:         https://github.com/pyca/service_identity/archive/%{version}.tar.gz
-BuildRequires:  %{python_module attrs}
+BuildRequires:  %{python_module attrs >= 19.1.0}
 BuildRequires:  %{python_module cryptography}
 BuildRequires:  %{python_module idna}
 BuildRequires:  %{python_module pyOpenSSL >= 0.14}
@@ -35,12 +35,14 @@ BuildRequires:  %{python_module pyasn1-modules}
 BuildRequires:  %{python_module pyasn1}
 BuildRequires:  %{python_module pytest}
 BuildRequires:  %{python_module setuptools}
+BuildRequires:  %{python_module six}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
-Requires:       python-attrs
+Requires:       python-attrs >= 19.1.0
 Requires:       python-cryptography
 Requires:       python-pyasn1
 Requires:       python-pyasn1-modules
+Requires:       python-six
 Recommends:     python-idna
 Recommends:     python-pyOpenSSL
 BuildArch:      noarch