diff --git a/pom.xml b/pom.xml
index ad8aa2b..19f83c9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -8,75 +8,75 @@
   <description>A simple Java toolkit for JSON</description>
   <url>http://code.google.com/p/json-simple/</url>
   <licenses>
-    <license>
-      <name>The Apache Software License, Version 2.0</name>
-      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
-    </license>
+      <license>
+          <name>The Apache Software License, Version 2.0</name>
+          <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+      </license>
   </licenses>
   <developers>
-    <developer>
-      <id>Yidong</id>
-      <name>Yidong Fang</name>
-      <roles>
-        <role>architect</role>
-        <role>developer</role>
-      </roles>
-      <timezone>+8</timezone>
-    </developer>
+      <developer>
+          <id>Yidong</id>
+          <name>Yidong Fang</name>
+          <roles>
+              <role>architect</role>
+              <role>developer</role>
+          </roles>
+          <timezone>+8</timezone>
+      </developer>
   </developers>
   <scm>
-    <connection>scm:svn:http://json-simple.googlecode.com/svn/trunk/</connection>
-    <developerConnection>scm:svn:http://json-simple.googlecode.com/svn/trunk/</developerConnection>
-    <url>http://json-simple.googlecode.com/svn/trunk/</url>
+      <connection>scm:svn:http://json-simple.googlecode.com/svn/trunk/</connection>
+      <developerConnection>scm:svn:http://json-simple.googlecode.com/svn/trunk/</developerConnection>
+      <url>http://json-simple.googlecode.com/svn/trunk/</url>
   </scm>
 
   <properties>
-    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 
   <dependencies>
-    <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <version>4.13.2</version>
-      <scope>test</scope>
-    </dependency>
+      <dependency>
+          <groupId>junit</groupId>
+          <artifactId>junit</artifactId>
+          <version>4.13.2</version>
+    <scope>test</scope>
+      </dependency>
   </dependencies>
-
+  
   <build>
-    <plugins>
-      <plugin>
-        <groupId>org.apache.felix</groupId>
-        <artifactId>maven-bundle-plugin</artifactId>
-        <version>5.1.1</version>
-        <extensions>true</extensions>
-      </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.8.1</version>
-        <configuration>
-          <source>1.8</source>
-          <target>1.8</target>
-        </configuration>
-      </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-source-plugin</artifactId>
-        <version>3.2.1</version>
-        <executions>
-          <execution>
-            <id>attach-sources</id>
-            <phase>verify</phase>
-            <goals>
-              <goal>jar-no-fork</goal>
-            </goals>
-          </execution>
-        </executions>
-      </plugin>
-    </plugins>
+      <plugins>
+          <plugin>
+              <groupId>org.apache.felix</groupId>
+              <artifactId>maven-bundle-plugin</artifactId>
+              <version>5.1.1</version>
+              <extensions>true</extensions>
+          </plugin>
+          <plugin>
+              <groupId>org.apache.maven.plugins</groupId>
+              <artifactId>maven-compiler-plugin</artifactId>
+              <version>3.8.1</version>
+              <configuration>
+                <source>1.8</source>
+                <target>1.8</target>
+              </configuration>
+          </plugin>
+          <plugin>
+              <groupId>org.apache.maven.plugins</groupId>
+              <artifactId>maven-source-plugin</artifactId>
+              <version>3.2.1</version>
+              <executions>
+                <execution>
+                  <id>attach-sources</id>
+                  <phase>verify</phase>
+                  <goals>
+                    <goal>jar-no-fork</goal>
+                  </goals>
+                </execution>
+              </executions>
+          </plugin>
+      </plugins>
   </build>
-
+  
   <profiles>
     <profile>
       <id>release-sign-artifacts</id>
@@ -89,21 +89,22 @@
       <build>
         <plugins>
           <plugin>
-            <groupId>org.apache.maven.plugins</groupId>
-            <artifactId>maven-gpg-plugin</artifactId>
-            <version>1.4</version>
-            <executions>
-              <execution>
-                <id>sign-artifacts</id>
-                <phase>verify</phase>
-                <goals>
-                  <goal>sign</goal>
-                </goals>
-              </execution>
-            </executions>
+              <groupId>org.apache.maven.plugins</groupId>
+              <artifactId>maven-gpg-plugin</artifactId>
+              <version>1.4</version>
+              <executions>
+                <execution>
+                  <id>sign-artifacts</id>
+                  <phase>verify</phase>
+                  <goals>
+                    <goal>sign</goal>
+                  </goals>
+                </execution>
+              </executions>
           </plugin>
         </plugins>
       </build>
     </profile>
   </profiles>
+
 </project>