<dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
-      <version>25.0-jre</version>
+      <version>26.0-jre</version>
     </dependency>
     <dependency>
       <groupId>org.apache.httpcomponents</groupId>
       <!-- parsing VNFDs -->
       <groupId>org.yaml</groupId>
       <artifactId>snakeyaml</artifactId>
-      <version>1.19</version>
+      <version>1.23</version>
     </dependency>
     <dependency>
       <groupId>pl.pojo</groupId>
     <dependency>
       <groupId>org.eclipse.jetty</groupId>
       <artifactId>jetty-server</artifactId>
-      <version>9.4.9.v20180320</version>
+      <version>9.4.11.v20180605</version>
       <scope>test</scope>
     </dependency>
   </dependencies>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.7.0</version>
+        <version>3.8.0</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
 
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-war-plugin</artifactId>
-        <version>3.2.0</version>
+        <version>3.2.2</version>
         <configuration>
           <failOnMissingWebXml>false</failOnMissingWebXml>
           <archive>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.7.0</version>
+        <version>3.8.0</version>
         <configuration>
           <source>1.8</source>
           <target>1.8</target>
 
     <dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
-      <version>25.0-jre</version>
+      <version>26.0-jre</version>
       <scope>test</scope>
     </dependency>
   </dependencies>