diff --git a/README.md b/README.md
index 3d9a61f60..26c393c56 100644
--- a/README.md
+++ b/README.md
@@ -489,7 +489,7 @@ kotlin {
     sourceSets {
         val wasmWasiMain by getting {
             dependencies {
-                implementation("kotlinx-datetime-zoneinfo", "2024a-spi.0.6.0-RC.2")
+                implementation("kotlinx-datetime-zoneinfo", "2025a-spi.0.6.2")
             }
         }
     }
diff --git a/build.gradle.kts b/build.gradle.kts
index 0c16b804b..ea6392c17 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -9,6 +9,7 @@ infra {
     }
     publishing {
         include(":kotlinx-datetime")
+        include(":kotlinx-datetime-zoneinfo")
         libraryRepoUrl = "https://github.com/Kotlin/kotlinx-datetime"
         sonatype {
             libraryStagingRepoDescription = project.name
diff --git a/core/commonKotlin/src/internal/Tzfile.kt b/core/commonKotlin/src/internal/Tzfile.kt
index d0a5362ae..61cebbe5b 100644
--- a/core/commonKotlin/src/internal/Tzfile.kt
+++ b/core/commonKotlin/src/internal/Tzfile.kt
@@ -6,6 +6,7 @@
 package kotlinx.datetime.internal
 
 import kotlinx.datetime.*
+import kotlinx.datetime.format.optional
 
 internal class TzFileData(
     val leapSecondRules: List<LeapSecondRule>,
@@ -204,8 +205,34 @@ private fun BinaryDataReader.readPosixTzString(): PosixTzString? {
     fun readName(): String? {
         if (c == '\n') return null
         val name = StringBuilder()
+        /* This check is a workaround for a bug in our tzdb processor used in kotlinx-datetime-zoneinfo.
+        In 2024b+, the tzdb includes the `%z` directive instead of the timezone abbreviations in cases where the
+        abbreviation can be inferred from the offset
+        (https://lists.iana.org/hyperkitty/list/tz-announce@iana.org/thread/IZ7AO6WRE3W3TWBL5IR6PMQUL433BQIE/):
+        instead of writing "abbreviation = -03, offset = -3", they now write "abbreviation = %z, offset = -3".
+        The first-party tzdb compiler zic knows how to support this:
+        https://github.com/eggert/tz/blob/271a5784a59e454b659d85948b5e65c17c11516a/zic.8#L590-L602
+        The compiler we're using (`tubular_time_tzdb`) doesn't seem to, though, and generates invalid POSIX strings.
+        This is a quick and dirty workaround. A proper solution would be to have correct data in `-zoneinfo`, but
+        it doesn't matter if we publish broken tzdb info now, as we are not planning on supporting consuming old tzdb
+        versions from new library versions, so the workaround can be removed as soon as the `-zoneinfo` artifact is
+        fixed. */
+        if (c == '%') {
+            c = readAsciiChar()
+            check(c == 'z') { "Invalid directive %$c in the timezone name abbreviation" }
+            c = readAsciiChar()
+            return GENERATE_NAME
+        }
         if (c == '<') {
             c = readAsciiChar()
+            if (c == '%') {
+                c = readAsciiChar()
+                check(c == 'z') { "Invalid directive %$c in the timezone name abbreviation" }
+                c = readAsciiChar()
+                check(c == '>') { "<%z> expected, got %$c" }
+                c = readAsciiChar()
+                return GENERATE_NAME
+            }
             while (c != '>') {
                 check(c.isLetterOrDigit() || c == '-' || c == '+') { "Invalid char '$c' in the std name in POSIX TZ string" }
                 name.append(c)
@@ -218,7 +245,7 @@ private fun BinaryDataReader.readPosixTzString(): PosixTzString? {
                 c = readAsciiChar()
             }
         }
-        check(name.isNotEmpty()) { "Empty std name in POSIX TZ string" }
+        check(name.isNotEmpty()) { "Empty std name in POSIX TZ string: got $c" }
         return name.toString()
     }
 
@@ -341,13 +368,29 @@ private fun BinaryDataReader.readPosixTzString(): PosixTzString? {
 
     val std = readName() ?: return null
     val stdOffset = readOffset() ?: throw IllegalArgumentException("Could not parse the std offset in POSIX TZ string")
-    val dst = readName() ?: return PosixTzString(std to stdOffset, null, null)
+    val stdName = if (std === GENERATE_NAME) ISO_OFFSET_BASIC_NO_Z.format(stdOffset) else std
+    val dst = readName() ?: return PosixTzString(stdName to stdOffset, null, null)
     val dstOffset = readOffset() ?: UtcOffset(seconds = stdOffset.totalSeconds + 3600)
+    val dstName = if (dst === GENERATE_NAME) ISO_OFFSET_BASIC_NO_Z.format(dstOffset) else dst
     val startDate = readDate() ?: return PosixTzString(std to stdOffset, dst to dstOffset, null)
     val startTime = readTime() ?: MonthDayTime.TransitionLocaltime(2, 0, 0)
     val endDate = readDate() ?: throw IllegalArgumentException("Could not parse the end date in POSIX TZ string")
     val endTime = readTime() ?: MonthDayTime.TransitionLocaltime(2, 0, 0)
     val start = MonthDayTime(startDate, startTime, MonthDayTime.OffsetResolver.WallClockOffset)
     val end = MonthDayTime(endDate, endTime, MonthDayTime.OffsetResolver.WallClockOffset)
-    return PosixTzString(std to stdOffset, dst to dstOffset, start to end)
+    return PosixTzString(stdName to stdOffset, dstName to dstOffset, start to end)
+}
+
+private const val GENERATE_NAME = "%z"
+
+private val ISO_OFFSET_BASIC_NO_Z by lazy {
+    UtcOffset.Format {
+        offsetHours()
+        optional {
+            offsetMinutesOfHour()
+            optional {
+                offsetSecondsOfMinute()
+            }
+        }
+    }
 }
diff --git a/gradle.properties b/gradle.properties
index 6699b76f4..97d8ba467 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -5,7 +5,7 @@ group=org.jetbrains.kotlinx
 version=0.6.1
 versionSuffix=SNAPSHOT
 
-tzdbVersion=2024a
+tzdbVersion=2025a
 
 defaultKotlinVersion=1.9.21
 dokkaVersion=1.9.20
diff --git a/timezones/full/tzdb/Africa/Addis_Ababa b/timezones/full/tzdb/Africa/Addis_Ababa
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index c715a83fd..af64be2be 100644
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