diff --git a/CHANGELOG.md b/CHANGELOG.md
index 873585a..ecbd20e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@ for what each part means.
 
 ## [Unreleased]
 
+## [2.4.20-0.1.3]
+
 ## [2.4.10-0.1.3]
 
 ### Fixed
diff --git a/README.md b/README.md
index cdcb6b0..7cbeb97 100644
--- a/README.md
+++ b/README.md
@@ -20,8 +20,8 @@ so `plugins {}` resolves it without extra repository configuration:
 
 ```kotlin
 plugins {
-    kotlin("jvm") version "2.4.10" // or kotlin("multiplatform") — any Kotlin target plugin
-    id("io.github.projectmapk.sealed-class-enumizer") version "2.4.10-0.1.3"
+    kotlin("jvm") version "2.4.20" // or kotlin("multiplatform") — any Kotlin target plugin
+    id("io.github.projectmapk.sealed-class-enumizer") version "2.4.20-0.1.3"
 }
 ```
 
@@ -57,7 +57,7 @@ execution, production and test compilations alike.
     <dependency>
       <groupId>io.github.projectmapk</groupId>
       <artifactId>sealed-class-enumizer-maven-plugin</artifactId>
-      <version>2.4.10-0.1.3</version>
+      <version>2.4.20-0.1.3</version>
     </dependency>
   </dependencies>
 </plugin>
@@ -70,7 +70,7 @@ dependency (Maven resolves the platform artifact, hence the `-jvm` suffix):
 <dependency>
   <groupId>io.github.projectmapk</groupId>
   <artifactId>sealed-class-enumizer-runtime-api-jvm</artifactId>
-  <version>2.4.10-0.1.3</version>
+  <version>2.4.20-0.1.3</version>
 </dependency>
 ```
 
diff --git a/gradle.properties b/gradle.properties
index 6bd0e96..790d487 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,7 +2,7 @@ kotlin.code.style=official
 
 # 配布版の自版。フル版は <KotlinVersion>-<自版> 形式で、前半の Kotlin 版は gradle/libs.versions.toml が正
 # （ルートの build.gradle.kts が結合して全モジュールへ配る）
-enumizerVersion=0.1.3-SNAPSHOT
+enumizerVersion=0.1.3
 
 # コンパイラプラグイン ID の単一情報源。compiler-plugin の EnumizeCommandLineProcessor.PLUGIN_ID と
 # 一致していなければならない。gradle-plugin / maven-plugin はビルド時生成の Coordinates 経由で参照し、