diff --git a/pom.xml b/pom.xml
index 332a765..955fecc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -61,7 +61,7 @@
     <build-helper-maven-plugin.version>3.5.0</build-helper-maven-plugin.version>
     <checkerframework.version>3.42.0</checkerframework.version>
     <!-- We support checkstyle 9.3 and higher; 10.0 requires JDK 11 or higher. -->
-    <checkstyle.version>10.12.7</checkstyle.version>
+    <checkstyle.version>10.21.0</checkstyle.version>
     <git-commit-id-plugin.version>4.9.10</git-commit-id-plugin.version>
     <!-- We support Guava versions 19.0 and higher. -->
     <guava.version>33.0.0-jre</guava.version>