diff --git a/pom.xml b/pom.xml
index e3a70ee..032ac9f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -110,7 +110,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-source-plugin</artifactId>
-                        <version>2.2.1</version>
+                        <version>2.4</version>
                         <executions>
                             <execution>
                                 <id>attach-sources</id>
@@ -123,7 +123,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-javadoc-plugin</artifactId>
-                        <version>2.9.1</version>
+                        <version>2.10.3</version>
                         <executions>
                             <execution>
                                 <id>attach-javadocs</id>
@@ -154,7 +154,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.1</version>
+                <version>3.3</version>
                 <configuration>
                     <source>1.7</source>
                     <target>1.7</target>
@@ -163,7 +163,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>2.3</version>
+                <version>2.4.1</version>
                 <executions>
                     <execution>
                         <phase>package</phase>