diff --git a/build.gradle b/build.gradle
index 13f0250..c8d84c7 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,6 +1,6 @@
 buildscript {
     ext {
-        elasticserachVersion = '6.3.2'
+        elasticserachVersion = '6.4.0'
         hanlpVersion = '1.6.8'
     }
 
@@ -17,7 +17,7 @@ buildscript {
 }
 
 group = 'io.shike'
-version = '6.3.2'
+version = '6.4.0'
 
 repositories {
     mavenLocal()