Update plugin versions.
diff --git a/pom.xml b/pom.xml
index 98e8d5b..9cbc8a2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -63,7 +63,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-javadoc-plugin</artifactId>
-                    <version>2.10.3</version>
+                    <version>3.0.1</version>
                     <configuration>
                         <breakiterator>true</breakiterator>
                         <!-- The notimestamp, windowtitle and bottom parameters are chosen to minimize the number
@@ -84,7 +84,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-site-plugin</artifactId>
-                <version>3.6</version>
+                <version>3.7.1</version>
                 <configuration>
                     <skipDeploy>true</skipDeploy>
                 </configuration>
@@ -92,7 +92,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-scm-publish-plugin</artifactId>
-                <version>1.1</version>
+                <version>3.0.0</version>
             </plugin>
         </plugins>
     </build>
diff --git a/src/site/site.xml b/src/site/site.xml
index 8644c07..a5ee1f5 100644
--- a/src/site/site.xml
+++ b/src/site/site.xml
@@ -21,7 +21,7 @@
     <skin>
         <groupId>org.apache.maven.skins</groupId>
         <artifactId>maven-fluido-skin</artifactId>
-        <version>1.6</version>
+        <version>1.7</version>
     </skin>
     <bannerRight>
         <src>http://ws.apache.org/images/project-logo.jpg</src>