diff --git a/.idea/checkstyle-idea.xml b/.idea/checkstyle-idea.xml
index 5f35e01..b52c3e2 100644
--- a/.idea/checkstyle-idea.xml
+++ b/.idea/checkstyle-idea.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CheckStyle-IDEA" serialisationVersion="2">
-    <checkstyleVersion>10.20.1</checkstyleVersion>
+    <checkstyleVersion>10.21.0</checkstyleVersion>
     <scanScope>JavaOnlyWithTests</scanScope>
     <suppressErrors>true</suppressErrors>
     <copyLibs>true</copyLibs>
diff --git a/pom.xml b/pom.xml
index 9ac78a6..a330974 100644
--- a/pom.xml
+++ b/pom.xml
@@ -45,7 +45,7 @@
 							<dependency>
 								<groupId>com.puppycrawl.tools</groupId>
 								<artifactId>checkstyle</artifactId>
-								<version>10.20.2</version>
+								<version>10.21.0</version>
 							</dependency>
 						</dependencies>
 						<configuration>
diff --git a/sessionize-java-client-demo/pom.xml b/sessionize-java-client-demo/pom.xml
index 37401f1..a1eb58f 100644
--- a/sessionize-java-client-demo/pom.xml
+++ b/sessionize-java-client-demo/pom.xml
@@ -28,7 +28,7 @@
 
 		<mainClass>software.xdev.Application</mainClass>
 
-		<log4j2-version>2.24.2</log4j2-version>
+		<log4j2-version>2.24.3</log4j2-version>
 	</properties>
 
 	<dependencies>
diff --git a/sessionize-java-client/pom.xml b/sessionize-java-client/pom.xml
index 6812c12..8e293a2 100644
--- a/sessionize-java-client/pom.xml
+++ b/sessionize-java-client/pom.xml
@@ -481,7 +481,7 @@
 							<dependency>
 								<groupId>com.puppycrawl.tools</groupId>
 								<artifactId>checkstyle</artifactId>
-								<version>10.20.2</version>
+								<version>10.21.0</version>
 							</dependency>
 						</dependencies>
 						<configuration>