diff --git a/pom.xml b/pom.xml
index b0de6b9..6eef26d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -45,7 +45,7 @@
     <plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-source-plugin</artifactId><version>3.4.0</version><executions><execution><id>sources</id><goals><goal>jar-no-fork</goal></goals></execution></executions></plugin>
     <plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-javadoc-plugin</artifactId><version>3.12.0</version><configuration><doclint>all,-missing</doclint><failOnWarnings>true</failOnWarnings></configuration><executions><execution><id>javadoc</id><goals><goal>jar</goal></goals></execution></executions></plugin>
 
-    <plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-enforcer-plugin</artifactId><version>3.6.3</version><executions><execution><goals><goal>enforce</goal></goals><configuration><rules><requireJavaVersion><version>[21,)</version></requireJavaVersion><requireMavenVersion><version>[3.9,)</version></requireMavenVersion></rules></configuration></execution></executions></plugin>
+    <plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-enforcer-plugin</artifactId><version>3.7.0</version><executions><execution><goals><goal>enforce</goal></goals><configuration><rules><requireJavaVersion><version>[21,)</version></requireJavaVersion><requireMavenVersion><version>[3.9,)</version></requireMavenVersion></rules></configuration></execution></executions></plugin>
     <plugin><groupId>com.diffplug.spotless</groupId><artifactId>spotless-maven-plugin</artifactId><version>3.10.4</version><configuration><java><includes><include>src/main/java/**/*.java</include><include>src/test/java/**/*.java</include><include>examples/spring-app/src/**/*.java</include></includes><googleJavaFormat><version>1.33.0</version><style>AOSP</style></googleJavaFormat><removeUnusedImports/></java></configuration><executions><execution><phase>validate</phase><goals><goal>check</goal></goals></execution></executions></plugin>
     <plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-checkstyle-plugin</artifactId><version>3.6.0</version><configuration><configLocation>${ogiri.checks.dir}/checkstyle.xml</configLocation><failOnViolation>true</failOnViolation><consoleOutput>true</consoleOutput></configuration><executions><execution><phase>validate</phase><goals><goal>check</goal></goals></execution></executions></plugin>
     <plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-pmd-plugin</artifactId><version>3.28.0</version><configuration><rulesets><ruleset>${ogiri.checks.dir}/pmd.xml</ruleset></rulesets><failOnViolation>true</failOnViolation><printFailingErrors>true</printFailingErrors></configuration><executions><execution><phase>verify</phase><goals><goal>check</goal></goals></execution></executions></plugin>