diff --git a/.idea/checkstyle-idea.xml b/.idea/checkstyle-idea.xml
index 5f35e018..b52c3e2f 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/chartjs-java-model/pom.xml b/chartjs-java-model/pom.xml
index 5b12ddae..e4b50fd6 100644
--- a/chartjs-java-model/pom.xml
+++ b/chartjs-java-model/pom.xml
@@ -360,7 +360,7 @@
 							<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/pom.xml b/pom.xml
index 138c8435..0b93b123 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>