diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index 70bad91..0000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/.gitignore b/.gitignore
index 43fafe3..f736344 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,5 +36,5 @@ bin/
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
 
-
+.DS_Store
 secret.properties
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 8d1c019..1ef2125 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,10 +1,11 @@
 group 'org.openkoreantext'
-version '6.5.2.0'
+version '7.5.1.0'
 
 apply plugin: 'java'
 apply plugin: 'maven'
 apply plugin: 'signing'
 apply plugin: 'jacoco'
+apply plugin: 'idea'
 
 sourceCompatibility = 1.8
 
@@ -20,7 +21,7 @@ configurations {
 }
 
 ext {
-    elasticsearchVersion = '6.5.2'
+    elasticsearchVersion = '7.5.1'
     openKoreanTextVersion = '2.1.0'
 }
 
@@ -42,7 +43,7 @@ task makePluginDescriptor(type: Copy) {
             'name': 'elasticsearch-analysis-openkoreantext',
             'classname': 'org.elasticsearch.plugin.analysis.openkoreantext.AnalysisOpenKoreanTextPlugin',
             'description': 'Korean analysis plugin integrates open-korean-text module into elasticsearch.',
-            'version': '1.0.0',
+            'version': '7.5.1',
             'javaVersion': sourceCompatibility,
             'elasticsearchVersion' : elasticsearchVersion
         ]
@@ -110,4 +111,4 @@ task jacocoRootReport(type: org.gradle.testing.jacoco.tasks.JacocoReport) {
 
 task wrapper(type: Wrapper) {
     gradleVersion = '3.4'
-}
\ No newline at end of file
+}
diff --git a/src/main/java/org/elasticsearch/index/analysis/OpenKoreanTextNormalizerFactory.java b/src/main/java/org/elasticsearch/index/analysis/OpenKoreanTextNormalizerFactory.java
index b3ecb5d..dfad5d1 100644
--- a/src/main/java/org/elasticsearch/index/analysis/OpenKoreanTextNormalizerFactory.java
+++ b/src/main/java/org/elasticsearch/index/analysis/OpenKoreanTextNormalizerFactory.java
@@ -12,7 +12,7 @@
 /**
  * A ES character-filter factory for {@link OpenKoreanTextNormalizer}.
  */
-public class OpenKoreanTextNormalizerFactory extends AbstractCharFilterFactory implements MultiTermAwareComponent {
+public class OpenKoreanTextNormalizerFactory extends AbstractCharFilterFactory {
 
     public OpenKoreanTextNormalizerFactory(IndexSettings indexSettings, Environment env, String name, Settings settings) {
         super(indexSettings, name);
@@ -23,10 +23,6 @@ public Reader create(Reader reader) {
         return new OpenKoreanTextNormalizer(reader);
     }
 
-    @Override
-    public Object getMultiTermComponent() {
-        return this;
-    }
 
     public static class OpenKoreanTextStemmerFactory extends AbstractTokenFilterFactory {
         public OpenKoreanTextStemmerFactory(IndexSettings indexSettings, Environment env, String name, Settings settings) {
diff --git a/src/main/java/org/elasticsearch/index/analysis/OpenKoreanTextTokenizerFactory.java b/src/main/java/org/elasticsearch/index/analysis/OpenKoreanTextTokenizerFactory.java
index 28747e9..e73b348 100644
--- a/src/main/java/org/elasticsearch/index/analysis/OpenKoreanTextTokenizerFactory.java
+++ b/src/main/java/org/elasticsearch/index/analysis/OpenKoreanTextTokenizerFactory.java
@@ -13,7 +13,7 @@
 public class OpenKoreanTextTokenizerFactory extends AbstractTokenizerFactory {
 
     public OpenKoreanTextTokenizerFactory(IndexSettings indexSettings, Environment env, String name, Settings settings) {
-        super(indexSettings, name, settings);
+        super(indexSettings, settings, name);
         UserDictionaryLoader.loadDefaultUserDictionaries();
     }