diff --git a/pom.xml b/pom.xml
index 2f75067..e8f27c8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <name>Logback Slack Appender</name>
@@ -8,7 +9,7 @@
 
     <groupId>com.github.maricn</groupId>
     <artifactId>logback-slack-appender</artifactId>
-    <version>1.2.1</version>
+    <version>1.3.0</version>
 
     <licenses>
         <license>
@@ -22,8 +23,8 @@
         <developerConnection>scm:git:https://github.com/maricn/logback-slack-appender.git</developerConnection>
         <connection>scm:git:https://github.com/maricn/logback-slack-appender.git</connection>
         <url>https://github.com/maricn/logback-slack-appender</url>
-      <tag>HEAD</tag>
-  </scm>
+        <tag>HEAD</tag>
+    </scm>
 
     <developers>
         <developer>
@@ -46,7 +47,7 @@
     </distributionManagement>
 
     <properties>
-		<java.version>1.7</java.version>
+        <java.version>1.7</java.version>
         <logback.version>1.1.2</logback.version>
         <junit.version>4.12</junit.version>
         <jackson-databind.version>2.6.6</jackson-databind.version>
@@ -89,15 +90,15 @@
                     <autoReleaseAfterClose>true</autoReleaseAfterClose>
                 </configuration>
             </plugin>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.5.1</version>
-				<configuration>
-					<source>${java.version}</source>
-					<target>${java.version}</target>
-				</configuration>
-			</plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.5.1</version>
+                <configuration>
+                    <source>${java.version}</source>
+                    <target>${java.version}</target>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 
@@ -115,7 +116,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>1.5</version>
+                        <version>1.6</version>
                         <executions>
                             <execution>
                                 <id>sign-artifacts</id>
@@ -132,7 +133,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-jar-plugin</artifactId>
-                        <version>2.5</version>
+                        <version>2.6</version>
                         <executions>
                             <execution>
                                 <goals>
@@ -157,7 +158,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-source-plugin</artifactId>
-                        <version>2.4</version>
+                        <version>3.0.1</version>
                         <executions>
                             <execution>
                                 <id>attach-sources</id>
@@ -180,6 +181,31 @@
                             </archive>
                         </configuration>
                     </plugin>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-javadoc-plugin</artifactId>
+                        <version>2.10.4</version>
+                        <executions>
+                            <execution>
+                                <id>attach-javadocs</id>
+                                <goals>
+                                    <goal>jar</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                        <configuration>
+                            <archive>
+                                <manifestEntries>
+                                    <Implementation-Vendor-Id>${project.groupId}</Implementation-Vendor-Id>
+                                    <Implementation-Title>${project.description}</Implementation-Title>
+                                    <Implementation-Version>${project.version}</Implementation-Version>
+                                    <Implementation-Build>${BUILD_NUMBER}</Implementation-Build>
+                                    <Specification-Title>${project.description}</Specification-Title>
+                                    <Specification-Version>${project.version}</Specification-Version>
+                                </manifestEntries>
+                            </archive>
+                        </configuration>
+                    </plugin>
                 </plugins>
             </build>
         </profile>