diff --git a/pom.xml b/pom.xml
index d5db25c..789dbde 100644
--- a/pom.xml
+++ b/pom.xml
@@ -87,7 +87,7 @@
 
         <project.scm.id>github</project.scm.id>
 
-        <elasticsearch.version>5.5.4</elasticsearch.version>
+        <elasticsearch.version>5.6.4</elasticsearch.version>
         <testng.version>6.12</testng.version>
         <mockito-core.version>2.12.0</mockito-core.version>
         <jacoco.version>0.7.9</jacoco.version>