diff --git a/pom.xml b/pom.xml
index e38429b5e..1bcbeaafc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -197,7 +197,7 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <projectVersion>${project.version}</projectVersion>
-    <antlr4.version>4.5.3</antlr4.version>
+    <antlr4.version>4.6</antlr4.version>
     <maven.site.plugin.version>3.6</maven.site.plugin.version>
     <maven.findbugs.plugin.version>3.0.4</maven.findbugs.plugin.version>
     <maven.pmd.plugin.version>3.7</maven.pmd.plugin.version>