diff --git a/pom.xml b/pom.xml
index 8b151ab..9e39d12 100644
--- a/pom.xml
+++ b/pom.xml
@@ -45,7 +45,7 @@
 							<dependency>
 								<groupId>com.puppycrawl.tools</groupId>
 								<artifactId>checkstyle</artifactId>
-								<version>13.4.2</version>
+								<version>13.9.0</version>
 							</dependency>
 						</dependencies>
 						<configuration>
diff --git a/spring-security-advanced-authentication-ui/pom.xml b/spring-security-advanced-authentication-ui/pom.xml
index eea1cfb..8f03ce5 100644
--- a/spring-security-advanced-authentication-ui/pom.xml
+++ b/spring-security-advanced-authentication-ui/pom.xml
@@ -243,7 +243,7 @@
 							<dependency>
 								<groupId>com.puppycrawl.tools</groupId>
 								<artifactId>checkstyle</artifactId>
-								<version>13.4.2</version>
+								<version>13.9.0</version>
 							</dependency>
 						</dependencies>
 						<configuration>