diff --git a/python-mailmanclient.changes b/python-mailmanclient.changes
index 16e89d6..6dc1ab4 100644
--- a/python-mailmanclient.changes
+++ b/python-mailmanclient.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Jun  9 08:48:24 UTC 2022 - Andreas Schneider <asn@cryptomilk.org>
+
+- Fix BR for mailman3 (package has been renamed)
+- Add missing BR for async_generator on openSUSE Leap >= 15.3
+
 -------------------------------------------------------------------
 Fri Nov 19 09:22:22 UTC 2021 - Andreas Schneider <asn@cryptomilk.org>
 
diff --git a/python-mailmanclient.spec b/python-mailmanclient.spec
index 1d31115..d883ec3 100644
--- a/python-mailmanclient.spec
+++ b/python-mailmanclient.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package python-mailmanclient
 #
-# Copyright (c) 2021 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
@@ -36,11 +36,14 @@ BuildRequires:  python-rpm-macros
 Requires:       python-requests
 BuildArch:      noarch
 # SECTION test requirements
+BuildRequires:  mailman3 >= 3.3.5
 BuildRequires:  %{python_module falcon}
 %if 0%{?suse_version} >= 1550 || 0%{?sle_version} >= 150400
 BuildRequires:  %{python_module httpx}
 %endif
-BuildRequires:  %{python_module mailman}
+%if 0%{?sle_version} <= 150400
+BuildRequires:  %{python_module async_generator}
+%endif
 BuildRequires:  %{python_module pytest-asyncio}
 BuildRequires:  %{python_module pytest-services}
 BuildRequires:  %{python_module pytest-vcr}