diff --git a/pom.xml b/pom.xml
index 29ed266..a565976 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
         <maven.compiler.target>1.7</maven.compiler.target>
         <rxjava.version>1.3.8</rxjava.version>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <checkstyle.version>3.3.0</checkstyle.version>
+        <checkstyle.version>3.3.1</checkstyle.version>
         <findbugs.version>3.0.5</findbugs.version>
         <javadoc.version>3.6.0</javadoc.version>
         <pmd.version>3.21.0</pmd.version>