diff --git a/README.md b/README.md
index 177f039..3fcb32c 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ Spring Boot Support for [Doma](https://github.com/domaframework/doma)
 <dependency>
     <groupId>org.seasar.doma.boot</groupId>
     <artifactId>doma-spring-boot-starter</artifactId>
-    <version>2.3.0</version>
+    <version>2.4.0</version>
 </dependency>
 <dependency>
     <groupId>org.seasar.doma</groupId>
diff --git a/doma-spring-boot-autoconfigure/pom.xml b/doma-spring-boot-autoconfigure/pom.xml
index ef14c0d..893ee46 100644
--- a/doma-spring-boot-autoconfigure/pom.xml
+++ b/doma-spring-boot-autoconfigure/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.seasar.doma.boot</groupId>
         <artifactId>doma-spring-boot</artifactId>
-        <version>2.4.0-SNAPSHOT</version>
+        <version>2.4.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/doma-spring-boot-core/pom.xml b/doma-spring-boot-core/pom.xml
index 835d3c8..3462a53 100644
--- a/doma-spring-boot-core/pom.xml
+++ b/doma-spring-boot-core/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.seasar.doma.boot</groupId>
         <artifactId>doma-spring-boot</artifactId>
-        <version>2.4.0-SNAPSHOT</version>
+        <version>2.4.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/doma-spring-boot-jacoco-aggregate/pom.xml b/doma-spring-boot-jacoco-aggregate/pom.xml
index 6e96e65..d485c6b 100644
--- a/doma-spring-boot-jacoco-aggregate/pom.xml
+++ b/doma-spring-boot-jacoco-aggregate/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>org.seasar.doma.boot</groupId>
         <artifactId>doma-spring-boot</artifactId>
-        <version>2.4.0-SNAPSHOT</version>
+        <version>2.4.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>doma-spring-boot-jacoco-aggregate</artifactId>
diff --git a/doma-spring-boot-samples/doma-spring-boot-sample-entity-listener/pom.xml b/doma-spring-boot-samples/doma-spring-boot-sample-entity-listener/pom.xml
index 8b89549..b170953 100644
--- a/doma-spring-boot-samples/doma-spring-boot-sample-entity-listener/pom.xml
+++ b/doma-spring-boot-samples/doma-spring-boot-sample-entity-listener/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.seasar.doma.boot</groupId>
         <artifactId>doma-spring-boot-samples</artifactId>
-        <version>2.4.0-SNAPSHOT</version>
+        <version>2.4.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/doma-spring-boot-samples/doma-spring-boot-sample-event-handler/pom.xml b/doma-spring-boot-samples/doma-spring-boot-sample-event-handler/pom.xml
index de49055..d057f34 100644
--- a/doma-spring-boot-samples/doma-spring-boot-sample-event-handler/pom.xml
+++ b/doma-spring-boot-samples/doma-spring-boot-sample-event-handler/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.seasar.doma.boot</groupId>
         <artifactId>doma-spring-boot-samples</artifactId>
-        <version>2.4.0-SNAPSHOT</version>
+        <version>2.4.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/doma-spring-boot-samples/doma-spring-boot-sample-simple/pom.xml b/doma-spring-boot-samples/doma-spring-boot-sample-simple/pom.xml
index 819ecdd..fae2f98 100644
--- a/doma-spring-boot-samples/doma-spring-boot-sample-simple/pom.xml
+++ b/doma-spring-boot-samples/doma-spring-boot-sample-simple/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.seasar.doma.boot</groupId>
         <artifactId>doma-spring-boot-samples</artifactId>
-        <version>2.4.0-SNAPSHOT</version>
+        <version>2.4.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/doma-spring-boot-samples/doma-spring-boot-sample-two-datasource/pom.xml b/doma-spring-boot-samples/doma-spring-boot-sample-two-datasource/pom.xml
index 00b2b8d..6647528 100644
--- a/doma-spring-boot-samples/doma-spring-boot-sample-two-datasource/pom.xml
+++ b/doma-spring-boot-samples/doma-spring-boot-sample-two-datasource/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.seasar.doma.boot</groupId>
 		<artifactId>doma-spring-boot-samples</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.4.0</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 
diff --git a/doma-spring-boot-samples/doma-spring-boot-sample-unified-criteria/pom.xml b/doma-spring-boot-samples/doma-spring-boot-sample-unified-criteria/pom.xml
index 09ff1d3..f2c0679 100644
--- a/doma-spring-boot-samples/doma-spring-boot-sample-unified-criteria/pom.xml
+++ b/doma-spring-boot-samples/doma-spring-boot-sample-unified-criteria/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.seasar.doma.boot</groupId>
         <artifactId>doma-spring-boot-samples</artifactId>
-        <version>2.4.0-SNAPSHOT</version>
+        <version>2.4.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/doma-spring-boot-samples/pom.xml b/doma-spring-boot-samples/pom.xml
index a72c387..b7f4896 100644
--- a/doma-spring-boot-samples/pom.xml
+++ b/doma-spring-boot-samples/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>doma-spring-boot</artifactId>
         <groupId>org.seasar.doma.boot</groupId>
-        <version>2.4.0-SNAPSHOT</version>
+        <version>2.4.0</version>
     </parent>
     <packaging>pom</packaging>
     <modelVersion>4.0.0</modelVersion>
diff --git a/doma-spring-boot-starter/pom.xml b/doma-spring-boot-starter/pom.xml
index 2e2cea9..bfa1d72 100644
--- a/doma-spring-boot-starter/pom.xml
+++ b/doma-spring-boot-starter/pom.xml
@@ -12,7 +12,7 @@
     <parent>
         <groupId>org.seasar.doma.boot</groupId>
         <artifactId>doma-spring-boot</artifactId>
-        <version>2.4.0-SNAPSHOT</version>
+        <version>2.4.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/pom.xml b/pom.xml
index 8a8b9c7..b9da749 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>org.seasar.doma.boot</groupId>
     <artifactId>doma-spring-boot</artifactId>
-    <version>2.4.0-SNAPSHOT</version>
+    <version>2.4.0</version>
     <packaging>pom</packaging>
 
     <name>doma-spring-boot</name>