diff --git a/pom.xml b/pom.xml
index 38b0a35..d7460bc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
     <inceptionYear>2012</inceptionYear>
 
     <properties>
-        <elasticsearch.version>7.7.0</elasticsearch.version>
+        <elasticsearch.version>7.16.0</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-pinyin</elasticsearch.plugin.name>
@@ -75,7 +75,7 @@
             <snapshots>
                 <enabled>true</enabled>
             </snapshots>
-            <url>http://oss.sonatype.org/content/repositories/releases/</url>
+            <url>https://oss.sonatype.org/content/repositories/releases/</url>
         </repository>
     </repositories>
 
@@ -95,13 +95,13 @@
             <scope>compile</scope>
         </dependency>
 
-        <dependency>
-            <groupId>log4j</groupId>
-            <artifactId>log4j</artifactId>
-            <version>1.2.17</version>
-            <scope>runtime</scope>
+   <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-api</artifactId>
+            <version>2.15.0</version>
         </dependency>
 
+
         <dependency>
             <groupId>org.hamcrest</groupId>
             <artifactId>hamcrest-core</artifactId>