diff --git a/README.md b/README.md
index 1522b5c..30dbeb8 100755
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@ You can download from here: https://github.com/medcl/elasticsearch-analysis-stco
     --------------------------------------------------
     | STConvert  Analysis Plugin   | Elasticsearch    |
     --------------------------------------------------
+    | 5.5.0                        | 5.5.0            |
+    --------------------------------------------------
     | 5.4.3                        | 5.4.3            |
     --------------------------------------------------
     | 5.3.2                        | 5.3.2            |
diff --git a/pom.xml b/pom.xml
index afc1331..92fa787 100755
--- a/pom.xml
+++ b/pom.xml
@@ -29,7 +29,7 @@
     </developers>
 
     <properties>
-        <elasticsearch.version>5.4.3</elasticsearch.version>
+        <elasticsearch.version>5.5.0</elasticsearch.version>
         <maven.compiler.target>1.8</maven.compiler.target>
         <elasticsearch.assembly.descriptor>${project.basedir}/src/main/assemblies/plugin.xml</elasticsearch.assembly.descriptor>
         <elasticsearch.plugin.name>analysis-stconvert</elasticsearch.plugin.name>