diff --git a/pom.xml b/pom.xml
index fef007e..71548f2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<groupId>io.kokuwa.micronaut</groupId>
@@ -85,29 +85,29 @@
 
 		<!-- plugins -->
 
-		<version.org.apache.maven.plugins.checkstyle>3.2.0</version.org.apache.maven.plugins.checkstyle>
+		<version.org.apache.maven.plugins.checkstyle>3.2.1</version.org.apache.maven.plugins.checkstyle>
 		<version.org.apache.maven.plugins.clean>3.2.0</version.org.apache.maven.plugins.clean>
 		<version.org.apache.maven.plugins.compiler>3.10.1</version.org.apache.maven.plugins.compiler>
-		<version.org.apache.maven.plugins.dependency_>3.3.0</version.org.apache.maven.plugins.dependency_>
+		<version.org.apache.maven.plugins.dependency_>3.5.0</version.org.apache.maven.plugins.dependency_>
 		<version.org.apache.maven.plugins.deploy>3.0.0</version.org.apache.maven.plugins.deploy>
 		<version.org.apache.maven.plugins.gpg>3.0.1</version.org.apache.maven.plugins.gpg>
-		<version.org.apache.maven.plugins.install>3.0.1</version.org.apache.maven.plugins.install>
+		<version.org.apache.maven.plugins.install>3.1.0</version.org.apache.maven.plugins.install>
 		<version.org.apache.maven.plugins.javadoc>3.4.1</version.org.apache.maven.plugins.javadoc>
-		<version.org.apache.maven.plugins.jar>3.2.2</version.org.apache.maven.plugins.jar>
-		<version.org.apache.maven.plugins.release>3.0.0-M6</version.org.apache.maven.plugins.release>
+		<version.org.apache.maven.plugins.jar>3.3.0</version.org.apache.maven.plugins.jar>
+		<version.org.apache.maven.plugins.release>3.0.0-M7</version.org.apache.maven.plugins.release>
 		<version.org.apache.maven.plugins.resources>3.3.0</version.org.apache.maven.plugins.resources>
 		<version.org.apache.maven.plugins.source>3.2.1</version.org.apache.maven.plugins.source>
 		<version.org.apache.maven.plugins.surefire>3.0.0-M7</version.org.apache.maven.plugins.surefire>
-		<version.org.codehaus.mojo.tidy>1.1.0</version.org.codehaus.mojo.tidy>
+		<version.org.codehaus.mojo.tidy>1.2.0</version.org.codehaus.mojo.tidy>
 		<version.org.sonatype.plugins.nexus-staging>1.6.13</version.org.sonatype.plugins.nexus-staging>
-		<version.com.puppycrawl.tools.checkstyle>10.3.3</version.com.puppycrawl.tools.checkstyle>
+		<version.com.puppycrawl.tools.checkstyle>10.6.0</version.com.puppycrawl.tools.checkstyle>
 		<version.io.kokuwa.checkstyle>0.5.6</version.io.kokuwa.checkstyle>
 
 		<!-- dependencies -->
 
 		<version.ch.qos.logback>1.2.11</version.ch.qos.logback>
 		<version.ch.qos.logback.contrib>0.1.5</version.ch.qos.logback.contrib>
-		<version.io.micronaut>3.6.1</version.io.micronaut>
+		<version.io.micronaut>3.8.4</version.io.micronaut>
 
 	</properties>