diff --git a/CHANGES.rst b/CHANGES.rst
index 097c581d..7df13d8c 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -31,6 +31,10 @@ Change log
 
   See also `GitHub issue 139 <https://github.com/pierky/arouteserver/issues/139>`__.
 
+- Improvement: avoid warnings when ``bgpq4`` prints ``Invalid AS number:`` errors.
+
+  When ``Invalid AS number:`` lines are printed by ``bgpq4``, avoid generating the ``bgpq4 succeeded but an error was printed`` warnings.
+
 - Improvement (Docker image): allow generation of clients.yml from Euro-IX files.
 
   A new environment variable is introduced (``EURO_IX_URL``) to instruct the Docker container to build the clients.yml file from the Euro-IX JSON export file.
diff --git a/pierky/arouteserver/version.py b/pierky/arouteserver/version.py
index 00556128..c851d933 100644
--- a/pierky/arouteserver/version.py
+++ b/pierky/arouteserver/version.py
@@ -13,5 +13,5 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-__version__ = "1.23-alpha4" # pragma: no cover
+__version__ = "1.23-alpha5" # pragma: no cover
 COPYRIGHT_YEAR = 2024 # pragma: no cover