diff -Nru python-tz-2022.7.1/debian/changelog python-tz-2022.7.1/debian/changelog
--- python-tz-2022.7.1/debian/changelog	2023-03-27 17:17:53.000000000 +0200
+++ python-tz-2022.7.1/debian/changelog	2023-05-10 12:29:49.000000000 +0200
@@ -1,3 +1,10 @@
+python-tz (2022.7.1-3ubuntu0.1) lunar; urgency=medium
+
+  * Update test_all_timezones_count for tzdata 2023c-2exp1ubuntu1.1, which
+    removed Asia/Hanoi again. (LP: #2017999)
+
+ -- Benjamin Drung <bdrung@ubuntu.com>  Wed, 10 May 2023 12:29:49 +0200
+
 python-tz (2022.7.1-3) unstable; urgency=medium
 
   * Team upload.
diff -Nru python-tz-2022.7.1/debian/control python-tz-2022.7.1/debian/control
--- python-tz-2022.7.1/debian/control	2023-03-27 17:12:30.000000000 +0200
+++ python-tz-2022.7.1/debian/control	2023-05-10 12:17:43.000000000 +0200
@@ -1,7 +1,8 @@
 Source: python-tz
 Section: python
 Priority: optional
-Maintainer: Debian  Python Team <team+python@tracker.debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Debian  Python Team <team+python@tracker.debian.org>
 Uploaders: Alastair McKinstry <mckinstry@debian.org>,
            Debian/Ubuntu Zope Team <pkg-zope-developers@lists.alioth.debian.org>,
            Fabio Tranchitella <kobold@debian.org>
diff -Nru python-tz-2022.7.1/debian/tests/regression python-tz-2022.7.1/debian/tests/regression
--- python-tz-2022.7.1/debian/tests/regression	2023-03-27 17:12:30.000000000 +0200
+++ python-tz-2022.7.1/debian/tests/regression	2023-05-10 12:15:30.000000000 +0200
@@ -75,8 +75,8 @@
     def test_all_timezones_count(self) -> None:
         """Test all_timezones count to be reasonable."""
         zones = len(pytz.all_timezones)
-        self.assertGreaterEqual(zones, 597, "less zones than 2022g-3")
-        self.assertLess(zones, round(597 * 1.1), ">10% more zones than 2022g-3")
+        self.assertGreaterEqual(zones, 596, "less zones than 2022g-2")
+        self.assertLess(zones, round(596 * 1.1), ">10% more zones than 2022g-2")
         self.assertEqual(len(pytz.all_timezones_set), zones)
 
     def test_common_timezones_count(self) -> None: