diff --git a/pom.xml b/pom.xml
index 4395dd1e..8f2e24aa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,10 +13,10 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.5.1</version>
+        <version>3.1</version>
         <configuration>
-          <source>1.7</source>
-          <target>1.7</target>
+          <source>1.8</source>
+          <target>1.8</target>
         </configuration>
       </plugin>
     </plugins>
@@ -25,12 +25,12 @@
     <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-compress</artifactId>
-      <version>1.7</version>
+      <version>1.8.1</version>
     </dependency>
     <dependency>
       <groupId>org.jruby</groupId>
       <artifactId>jruby-complete</artifactId>
-      <version>1.7.12</version>
+      <version>1.7.13</version>
     </dependency>
     <dependency>
       <groupId>com.google.guava</groupId>
@@ -40,7 +40,7 @@
     <dependency>
       <groupId>io.netty</groupId>
       <artifactId>netty-all</artifactId>
-      <version>4.0.18.Final</version>
+      <version>4.0.20.Final</version>
       <scope>compile</scope>
     </dependency>
     <dependency>