diff --git a/pom.xml b/pom.xml
index 9b9f8f49..c95fd4c4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -77,9 +77,9 @@
         </dependency>
         <dependency>
             <groupId>javax.servlet</groupId>
-            <artifactId>javax.servlet-api</artifactId>
-            <version>3.0.1</version>
-            <scope>compile</scope>
+            <artifactId>servlet-api</artifactId>
+            <version>3.0-alpha-1</version>
+            <scope>provided</scope>
         </dependency>
         <!-- The huge set of awesome Java libraries are available as such 
             for Vaadin developers, you should take the advantage of those. In this app 
@@ -87,7 +87,7 @@
         <dependency>
             <groupId>commons-beanutils</groupId>
             <artifactId>commons-beanutils</artifactId>
-            <version>1.9.2</version>
+            <version>1.9.4</version>
             <type>jar</type>
         </dependency>
 		
@@ -95,56 +95,57 @@
 		<dependency>
 	<groupId>log4j</groupId>
 	<artifactId>log4j</artifactId>
-	<version>1.2.9</version>
+	<version>1.2.17</version>
 </dependency>
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.7</version>
+			<version>2.0.0-alpha1</version>
 		</dependency>
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-simple</artifactId>
-			<version>1.7.7</version>
+			<version>2.0.0-alpha1</version>
 		</dependency>
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-log4j12</artifactId>
-			<version>1.7.7</version>
+			<version>2.0.0-alpha1</version>
 		</dependency>
 
 				<!-- TESTING -->
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>
-			<version>4.7</version>
+			<version>4.13</version>
 			<scope>test</scope>
 		</dependency>
 
 
 		<!-- COMMONS -->
 		<dependency>
-			<groupId>commons-httpclient</groupId>
+			<groupId>commons-httpclient.wso2</groupId>
 			<artifactId>commons-httpclient</artifactId>
-			<version>3.1</version>
+			<version>3.1.0.wso2v2</version>
 		</dependency>
 
+
 		<dependency>
 			<groupId>org.apache.commons</groupId>
 			<artifactId>commons-lang3</artifactId>
-			<version>3.1</version>
+			<version>3.11</version>
 		</dependency>
 
 		<!-- JSON -->
 		<dependency>
 			<groupId>org.json</groupId>
-			<artifactId>json</artifactId>
-			<version>20140107</version>
+			<artifactId>org.json</artifactId>
+			<version>chargebee-1.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.codehaus.jackson</groupId>
 			<artifactId>jackson-jaxrs</artifactId>
-			<version>1.9.4</version>
+			<version>1.9.13</version>
 		</dependency>
 
 		<!-- XML -->
@@ -162,7 +163,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.2</version>
+                <version>3.8.1</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>
@@ -171,13 +172,13 @@
             <plugin>
                 <groupId>org.eclipse.jetty</groupId>
                 <artifactId>jetty-maven-plugin</artifactId>
-                <version>9.2.3.v20140905</version>
+                <version>11.0.0.beta1</version>
             </plugin>
 			
 						<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.19.1</version>
+				<version>2.22.0</version>
 				<configuration>
 					<parallel>methods</parallel>
 					<threadCount>10</threadCount>
@@ -202,7 +203,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-report-plugin</artifactId>
-        <version>2.19.1</version>
+        <version>2.18.1</version>
       </plugin>
     </plugins>
   </reporting>
@@ -239,7 +240,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-pmd-plugin</artifactId>
-                        <version>3.2</version>
+                        <version>3.13.0</version>
                         <configuration>
                             <targetJdk>1.8</targetJdk>
                             <aggregate>true</aggregate>
@@ -254,8 +255,9 @@
 
                     <!-- FINDBUGS -->
                     <plugin>
+					    <groupId>org.codehaus.mojo</groupId>
                         <artifactId>findbugs-maven-plugin</artifactId>
-                        <version>2.4.0</version>
+                        <version>3.0.5</version>
                         <configuration>
                             <effort>Max</effort>
                             <xmlOutput>true</xmlOutput>
@@ -274,7 +276,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-enforcer-plugin</artifactId>
-                        <version>1.0</version>
+                        <version>1.4.1</version>
                         <executions>
                             <execution>
                                 <id>enforce-versions</id>
@@ -284,7 +286,7 @@
                                 <configuration>
                                     <rules>
                                         <requireMavenVersion>
-                                            <version>[3.0,)</version>
+                                            <version>3.6.3</version>
                                         </requireMavenVersion>
                                     </rules>
                                 </configuration>
@@ -294,22 +296,22 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-site-plugin</artifactId>
-                        <version>3.3</version>
+                        <version>3.9.1</version>
                         <configuration>
                             <reportPlugins>
                                 <plugin>
                                     <artifactId>maven-project-info-reports-plugin</artifactId>
-                                    <version>2.7</version>
+                                    <version>3.1.0</version>
                                 </plugin>
                                 <plugin>
                                     <groupId>org.jacoco</groupId>
                                     <artifactId>jacoco-maven-plugin</artifactId>
-                                    <version>0.7.2.201409121644</version>
+                                    <version>0.8.5</version>
                                 </plugin>
                                 <plugin>
                                     <groupId>org.apache.maven.plugins</groupId>
                                     <artifactId>maven-checkstyle-plugin</artifactId>
-                                    <version>3.0.1</version>
+                                    <version>3.1.1</version>
                                     <!--<configuration>-->
                                     <!--<configLocation>gol-checkstyle.xml</configLocation>-->
                                     <!--</configuration>-->
@@ -317,7 +319,7 @@
                                 <plugin>
                                     <groupId>org.apache.maven.plugins</groupId>
                                     <artifactId>maven-pmd-plugin</artifactId>
-                                    <version>3.2</version>
+                                    <version>3.13.0</version>
                                     <configuration>
                                         <targetJdk>1.8</targetJdk>
                                         <aggregate>true</aggregate>
@@ -333,7 +335,7 @@
                                 <plugin>
                                     <groupId>org.codehaus.mojo</groupId>
                                     <artifactId>findbugs-maven-plugin</artifactId>
-                                    <version>2.4.0</version>
+                                    <version>3.0.5</version>
                                     <configuration>
                                         <effort>Max</effort>
                                         <xmlOutput>true</xmlOutput>
@@ -341,7 +343,7 @@
                                 </plugin>
                                 <plugin>
                                     <artifactId>maven-javadoc-plugin</artifactId>
-                                    <version>2.9.1</version>
+                                    <version>3.2.0</version>
                                     <configuration>
                                         <source>1.8</source>
                                         <doclet>
@@ -350,7 +352,7 @@
                                         <docletArtifact>
                                             <groupId>gr.spinellis</groupId>
                                             <artifactId>UmlGraph</artifactId>
-                                            <version>4.6</version>
+                                            <version>5.6.6</version>
                                         </docletArtifact>
                                         <additionalparam>
                                             -inferrel -inferdep -hide java.* -collpackages
@@ -362,7 +364,7 @@
                                 <plugin>
                                     <groupId>org.apache.maven.plugins</groupId>
                                     <artifactId>maven-jxr-plugin</artifactId>
-                                    <version>2.4</version>
+                                    <version>3.0.0</version>
                                 </plugin>
                             </reportPlugins>
                         </configuration>
@@ -384,7 +386,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-enforcer-plugin</artifactId>
-                        <version>1.0</version>
+                        <version>1.4.1</version>
                         <executions>
                             <execution>
                                 <id>enforce-versions</id>
@@ -394,7 +396,7 @@
                                 <configuration>
                                     <rules>
                                         <requireMavenVersion>
-                                            <version>[2.0.9, 2.2.1]</version>
+                                            <version>3.6.3</version>
                                         </requireMavenVersion>
                                     </rules>
                                 </configuration>
@@ -404,7 +406,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-site-plugin</artifactId>
-                        <version>2.1.1</version>
+                        <version>3.9.1</version>
                         <dependencies>
                             <dependency>
                                 <groupId>com.devopsdemo.tutorial</groupId>
@@ -420,7 +422,7 @@
                     <plugin>
                         <groupId>org.codehaus.mojo</groupId>
                         <artifactId>cobertura-maven-plugin</artifactId>
-                        <version>${cobertura.version}</version>
+                        <version>2.7</version>
                         <configuration>
                             <formats>
                                 <format>html</format>
@@ -431,7 +433,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-pmd-plugin</artifactId>
-                        <version>2.5</version>
+                        <version>3.13.0</version>
                         <configuration>
                             <targetJdk>1.8</targetJdk>
                             <aggregate>true</aggregate>
@@ -448,7 +450,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-checkstyle-plugin</artifactId>
-                        <version>2.9.1</version>
+                        <version>3.1.1</version>
                         <configuration>
                             <configLocation>sampleapp-build/checkstyle.xml</configLocation>
                         </configuration>
@@ -456,7 +458,7 @@
                     <plugin>
                         <groupId>org.codehaus.mojo</groupId>
                         <artifactId>findbugs-maven-plugin</artifactId>
-                        <version>2.4.0</version>
+                        <version>3.0.5</version>
                         <configuration>
                             <effort>Max</effort>
                             <xmlOutput>true</xmlOutput>
@@ -464,7 +466,7 @@
                     </plugin>
                     <plugin>
                         <artifactId>maven-javadoc-plugin</artifactId>
-                        <version>2.7</version>
+                        <version>3.2.0</version>
                         <configuration>
                             <source>1.8</source>
                             <doclet>
@@ -473,7 +475,7 @@
                             <docletArtifact>
                                 <groupId>gr.spinellis</groupId>
                                 <artifactId>UmlGraph</artifactId>
-                                <version>4.6</version>
+                                <version>5.6.6</version>
                             </docletArtifact>
                             <additionalparam>
                                 -inferrel -inferdep -hide java.* -collpackages
@@ -485,7 +487,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-jxr-plugin</artifactId>
-                        <version>2.1</version>
+                        <version>3.0.0</version>
                     </plugin>
                 </plugins>
             </reporting>