diff -Nru tzdata-2023a/asia tzdata-2023b/asia
--- tzdata-2023a/asia	2023-03-22 19:26:50.000000000 +0100
+++ tzdata-2023b/asia	2023-03-23 19:45:11.000000000 +0100
@@ -2691,6 +2691,12 @@
 
 
 # Lebanon
+#
+# From Saadallah Itani (2023-03-23):
+# Lebanon too announced today delay of Spring forward from March 25 to April 20.
+# From Paul Eggert (2023-03-23):
+# https://www.mtv.com.lb/en/News/Local/1352516/lebanon-postpones-daylight-saving-time-adoption
+#
 # Rule	NAME	FROM	TO	-	IN	ON	AT	SAVE	LETTER/S
 Rule	Lebanon	1920	only	-	Mar	28	0:00	1:00	S
 Rule	Lebanon	1920	only	-	Oct	25	0:00	0	-
@@ -2713,9 +2719,11 @@
 Rule	Lebanon	1989	only	-	May	10	0:00	1:00	S
 Rule	Lebanon	1990	1992	-	May	1	0:00	1:00	S
 Rule	Lebanon	1992	only	-	Oct	4	0:00	0	-
-Rule	Lebanon	1993	max	-	Mar	lastSun	0:00	1:00	S
+Rule	Lebanon	1993	2022	-	Mar	lastSun	0:00	1:00	S
 Rule	Lebanon	1993	1998	-	Sep	lastSun	0:00	0	-
 Rule	Lebanon	1999	max	-	Oct	lastSun	0:00	0	-
+Rule	Lebanon	2023	only	-	Apr	21	0:00	1:00	S
+Rule	Lebanon	2024	max	-	Mar	lastSun	0:00	1:00	S
 # Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Beirut	2:22:00 -	LMT	1880
 			2:00	Lebanon	EE%sT
diff -Nru tzdata-2023a/debian/changelog tzdata-2023b/debian/changelog
--- tzdata-2023a/debian/changelog	2023-03-24 01:31:18.000000000 +0100
+++ tzdata-2023b/debian/changelog	2023-03-24 15:39:21.000000000 +0100
@@ -1,3 +1,10 @@
+tzdata (2023b-0ubuntu0.18.04.0) bionic; urgency=medium
+
+  * New upstream version (LP: #2012599):
+    - Lebanon delays the start of DST this year.
+
+ -- Benjamin Drung <bdrung@ubuntu.com>  Fri, 24 Mar 2023 15:39:21 +0100
+
 tzdata (2023a-0ubuntu0.18.04.0) bionic; urgency=medium
 
   * New upstream release (LP: #2012599)
diff -Nru tzdata-2023a/debian/tests/python tzdata-2023b/debian/tests/python
--- tzdata-2023a/debian/tests/python	2023-03-24 01:28:46.000000000 +0100
+++ tzdata-2023b/debian/tests/python	2023-03-24 15:38:06.000000000 +0100
@@ -108,6 +108,12 @@
         date = timezone.localize(datetime.datetime(2023, 4, 28, 12, 0))
         self.assertEqual(self._hours(date.utcoffset()), 3)
 
+    def test_2023b(self) -> None:
+        """Test Lebanon delays DST from 2023b release."""
+        timezone = pytz.timezone("Asia/Beirut")
+        date = timezone.localize(datetime.datetime(2023, 4, 2))
+        self.assertEqual(self._hours(date.utcoffset()), 2)
+
 
 def main() -> None:
     """Run unit tests in verbose mode."""
diff -Nru tzdata-2023a/NEWS tzdata-2023b/NEWS
--- tzdata-2023a/NEWS	2023-03-22 20:48:28.000000000 +0100
+++ tzdata-2023b/NEWS	2023-03-24 03:51:51.000000000 +0100
@@ -1,5 +1,16 @@
 News for the tz database
 
+Release 2023b - 2023-03-23 19:50:38 -0700
+
+  Briefly:
+    Lebanon delays the start of DST this year.
+
+  Changes to future timestamps
+
+    This year Lebanon springs forward April 20/21 not March 25/26.
+    (Thanks to Saadallah Itani.)
+
+
 Release 2023a - 2023-03-22 12:39:33 -0700
 
   Briefly:
diff -Nru tzdata-2023a/version tzdata-2023b/version
--- tzdata-2023a/version	2023-03-22 20:48:29.000000000 +0100
+++ tzdata-2023b/version	2023-03-24 03:51:52.000000000 +0100
@@ -1 +1 @@
-2023a
+2023b