diff --git a/README.md b/README.md
index 2612527..9409514 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # elasticsearch-remove-token-filter
 
-This is a customized stop filter plugin, compatible with ES 5.6.5. This stop filter completely removes stop word's 
+This is a customized stop filter plugin, compatible with ES 7.2.1. This stop filter completely removes stop word's 
 token position from the token stream whereas the ES build-in stop filter only removes the stop word token but preserves
  the stop word token position. The difference can be best illustrated with the following use case.
  
diff --git a/pom.xml b/pom.xml
index 9b81cb2..716b556 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>elasticsearch.tokenremove</groupId>
     <artifactId>elasticsearch-tokenremove</artifactId>
-    <version>1.2.1</version>
+    <version>1.2.2</version>
     <packaging>jar</packaging>
     <description>A customized token filter that drops stop word tokens completely from the token stream including their token positions</description>
     <inceptionYear>2018</inceptionYear>
@@ -19,7 +19,7 @@
     </licenses>
 
     <properties>
-        <elasticsearch.version>5.6.5</elasticsearch.version>
+        <elasticsearch.version>7.2.1</elasticsearch.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <skipTests>false</skipTests>
         <skipUnitTests>${skipTests}</skipUnitTests>
diff --git a/src/main/assemblies/plugin.xml b/src/main/assemblies/plugin.xml
index 48157c6..4f6506b 100644
--- a/src/main/assemblies/plugin.xml
+++ b/src/main/assemblies/plugin.xml
@@ -8,15 +8,13 @@
     <files>
         <file>
             <source>${project.basedir}/src/main/resources/plugin-descriptor.properties</source>
-            <outputDirectory>elasticsearch</outputDirectory>
             <filtered>true</filtered>
         </file>
     </files>
     <dependencySets>
         <dependencySet>
-            <outputDirectory>elasticsearch</outputDirectory>
             <useProjectArtifact>true</useProjectArtifact>
             <useTransitiveFiltering>true</useTransitiveFiltering>
         </dependencySet>
     </dependencySets>
-</assembly>
\ No newline at end of file
+</assembly>
diff --git a/src/main/java/elasticsearch/tokenremove/RemoveTokenFilterFactory.java b/src/main/java/elasticsearch/tokenremove/RemoveTokenFilterFactory.java
index 90bbee6..c431902 100644
--- a/src/main/java/elasticsearch/tokenremove/RemoveTokenFilterFactory.java
+++ b/src/main/java/elasticsearch/tokenremove/RemoveTokenFilterFactory.java
@@ -2,7 +2,7 @@
 
 import org.apache.lucene.analysis.CharArraySet;
 import org.apache.lucene.analysis.TokenStream;
-import org.apache.lucene.analysis.core.StopAnalyzer;
+import org.apache.lucene.analysis.en.EnglishAnalyzer;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.env.Environment;
 import org.elasticsearch.index.IndexSettings;
@@ -17,11 +17,11 @@ public class RemoveTokenFilterFactory extends AbstractTokenFilterFactory {
     public RemoveTokenFilterFactory(IndexSettings indexSettings, Environment env, String name, Settings settings) {
         super(indexSettings, name, settings);
         this.ignoreCase = settings.getAsBoolean("ignore_case", false);
-        this.stopWords = Analysis.parseStopWords(env, settings, StopAnalyzer.ENGLISH_STOP_WORDS_SET, ignoreCase);
+        this.stopWords = Analysis.parseStopWords(env, settings, EnglishAnalyzer.ENGLISH_STOP_WORDS_SET, ignoreCase);
     }
 
     @Override
     public TokenStream create(TokenStream tokenStream) {
         return new RemoveTokenFilter(tokenStream, stopWords);
     }
-}
\ No newline at end of file
+}