diff --git a/pom.xml b/pom.xml
index 50bc3d7..5e3d553 100644
--- a/pom.xml
+++ b/pom.xml
@@ -101,7 +101,7 @@ SOFTWARE.
     <slf4j.version>2.0.16</slf4j.version>
     <jtcop.version>0.1.14</jtcop.version>
     <nexus-staging-maven-plugin.version>1.7.0</nexus-staging-maven-plugin.version>
-    <checkstyle.version>10.20.1</checkstyle.version>
+    <checkstyle.version>10.21.0</checkstyle.version>
     <maven-checkstyle-plugin.version>3.6.0</maven-checkstyle-plugin.version>
     <sa-tan.version>0.1.5</sa-tan.version>
     <maven-invoker-plugin.version>3.8.1</maven-invoker-plugin.version>