diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index de04150..9f9a661
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <lucene.version>4.10.1</lucene.version>
+        <lucene.version>8.2.0</lucene.version>
         <ehcache.version>2.6.2</ehcache.version>
         <hadoop.version>1.2.1</hadoop.version>
         <log4j.version>1.2.17</log4j.version>