diff --git a/pom.xml b/pom.xml
index 4a8cb8900..d6e0026b4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -114,7 +114,7 @@
     <bootstrap.version>3.4.1</bootstrap.version>
     <cglib.version>3.3.0</cglib.version>
     <!-- do not update necessary for lesson -->
-    <checkstyle.version>3.3.0</checkstyle.version>
+    <checkstyle.version>3.3.1</checkstyle.version>
     <commons-collections.version>3.2.1</commons-collections.version>
     <commons-io.version>2.14.0</commons-io.version>
     <commons-lang3.version>3.12.0</commons-lang3.version>