diff --git a/CHANGELOG.md b/CHANGELOG.md
index 01c8e797..b790ccfa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,26 @@
 
 ## [Unreleased]
 
+## [2.2.1] - 2025-09-03
+
+### Bug Fixes
+
+- Fix: Unnecessary Space in Parser-Level Comments ([#440])
+- Improve SQL CASE Statement Formatting ([#441])
+- Add Formatting Support for Table Modification Queries ([#435])
+
+### Dependency Updates
+
+- Update dependency com.fasterxml.jackson.module:jackson-module-kotlin to v2.20.0 ([#432])
+- Update dependency org.jetbrains.intellij.platform to v2.8.0 ([#442])
+
+[#440]:https://github.com/domaframework/doma-tools-for-intellij/pull/440
+[#441]:https://github.com/domaframework/doma-tools-for-intellij/pull/441
+[#435]:https://github.com/domaframework/doma-tools-for-intellij/pull/435
+[#432]:https://github.com/domaframework/doma-tools-for-intellij/pull/432
+[#442]:https://github.com/domaframework/doma-tools-for-intellij/pull/442
+
+
 ## [2.2.0] - 2025-08-29
 
 ### New Features
@@ -519,3 +539,4 @@
 [#103]: https://github.com/domaframework/doma-tools-for-intellij/pull/103
 [#102]: https://github.com/domaframework/doma-tools-for-intellij/pull/102
 [#10]: https://github.com/domaframework/doma-tools-for-intellij/pull/10
+[2.2.1]: https://github.com/domaframework/doma-tools-for-intellij/compare/2.2.0...2.2.1
diff --git a/gradle.properties b/gradle.properties
index 5e69e5e5..abb34c42 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,7 +1,7 @@
 pluginGroup = org.domaframework.doma.intellij
 pluginName = Doma Tools for IntelliJ
 pluginRepositoryUrl = https://github.com/domaframework/doma-tools-for-intellij
-pluginVersion = 2.2.1-beta
+pluginVersion = 2.2.1
 
 pluginSinceBuild=233
 
diff --git a/src/main/kotlin/org/domaframework/doma/intellij/common/util/PluginUtil.kt b/src/main/kotlin/org/domaframework/doma/intellij/common/util/PluginUtil.kt
index fdd50177..8b16c774 100644
--- a/src/main/kotlin/org/domaframework/doma/intellij/common/util/PluginUtil.kt
+++ b/src/main/kotlin/org/domaframework/doma/intellij/common/util/PluginUtil.kt
@@ -19,7 +19,7 @@ import com.intellij.ide.plugins.PluginManagerCore
 import com.intellij.openapi.extensions.PluginId
 
 const val PLUGIN_ID = "org.domaframework.doma.intellij"
-const val PLUGIN_VERSION = "2.2.1-beta"
+const val PLUGIN_VERSION = "2.2.1"
 
 open class PluginUtil {
     companion object {
diff --git a/src/main/resources/logback-test.xml b/src/main/resources/logback-test.xml
index 1d2d6f7a..fdfcdb47 100644
--- a/src/main/resources/logback-test.xml
+++ b/src/main/resources/logback-test.xml
@@ -2,7 +2,7 @@
 <configuration scan="true">
   <property resource="logback.properties" />
   <property name="LOG_FILE_BASE_DIR" value="${org.domaframework.doma.intellij.log.path:-/doma-tools}" />
-  <property name="LOG_FILE_VERSION" value="${org.domaframework.doma.intellij.plugin.version:-2.2.1-beta}" />
+  <property name="LOG_FILE_VERSION" value="${org.domaframework.doma.intellij.plugin.version:-2.2.1}" />
 
   <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
     <encoder>
diff --git a/src/main/resources/logback.xml b/src/main/resources/logback.xml
index 1d2d6f7a..fdfcdb47 100644
--- a/src/main/resources/logback.xml
+++ b/src/main/resources/logback.xml
@@ -2,7 +2,7 @@
 <configuration scan="true">
   <property resource="logback.properties" />
   <property name="LOG_FILE_BASE_DIR" value="${org.domaframework.doma.intellij.log.path:-/doma-tools}" />
-  <property name="LOG_FILE_VERSION" value="${org.domaframework.doma.intellij.plugin.version:-2.2.1-beta}" />
+  <property name="LOG_FILE_VERSION" value="${org.domaframework.doma.intellij.plugin.version:-2.2.1}" />
 
   <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
     <encoder>