diff --git a/pom.xml b/pom.xml
index fd69e39..ba89006 100644
--- a/pom.xml
+++ b/pom.xml
@@ -134,6 +134,29 @@
 
     <build>
         <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-clean-plugin</artifactId>
+                <version>2.5</version>
+                <configuration>
+                    <filesets>
+                        <fileset>
+                            <directory>${project.basedir}/asset/</directory>
+                            <useDefaultExcludes>true</useDefaultExcludes>
+                            <includes>
+                                <include>**/*</include>
+                            </includes>
+                        </fileset>
+                        <fileset>
+                            <directory>${project.basedir}/api-docs/</directory>
+                            <useDefaultExcludes>true</useDefaultExcludes>
+                            <includes>
+                                <include>**/*</include>
+                            </includes>
+                        </fileset>
+                    </filesets>
+                </configuration>
+            </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>