diff --git a/pom.xml b/pom.xml
index 6db1c92..840b5e3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
         <rxjava2.version>2.2.21</rxjava2.version>
 
         <javadoc.version>3.6.0</javadoc.version>
-        <checkstyle.version>3.3.0</checkstyle.version>
+        <checkstyle.version>3.3.1</checkstyle.version>
         <pmd.version>3.21.0</pmd.version>
         <project.info.version>3.4.5</project.info.version>
         <jxr.version>3.3.1</jxr.version>