diff --git a/README.md b/README.md
index 8eb13b0..9b221e4 100644
--- a/README.md
+++ b/README.md
@@ -14,3 +14,8 @@ export PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
 ....
 echo "finished ..."
 ```
+
+### Build:
+
+Execute the command `maven clean install -U` from the project root directory to
+build the project using Maven and import the dependencies.
diff --git a/pom.xml b/pom.xml
index e7efe7e..681afdd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.qualixium</groupId>
     <artifactId>nbshell</artifactId>
-    <version>1.2.3</version>
+    <version>1.2.4</version>
     <packaging>nbm</packaging>
     <description>
         <![CDATA[
@@ -73,6 +73,11 @@
         </repository>
     </repositories>
     <dependencies>
+        <dependency>
+            <groupId>javax.annotation</groupId>
+            <artifactId>javax.annotation-api</artifactId>
+            <version>1.3.1</version>
+        </dependency>
         <dependency>
             <groupId>org.netbeans.api</groupId>
             <artifactId>org-netbeans-api-annotations-common</artifactId>
@@ -174,6 +179,6 @@
     </dependencies>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <netbeans.platform.version>RELEASE81</netbeans.platform.version>
+        <netbeans.platform.version>RELEASE90</netbeans.platform.version>
     </properties>
-</project>
\ No newline at end of file
+</project>