diff --git a/pom.xml b/pom.xml
index 65b141e2..a4b88906 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,12 +25,12 @@
     <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-compress</artifactId>
-      <version>1.8.1</version>
+      <version>1.9</version>
     </dependency>
     <dependency>
       <groupId>org.jruby</groupId>
       <artifactId>jruby-complete</artifactId>
-      <version>1.7.15</version>
+      <version>1.7.19</version>
     </dependency>
     <dependency>
       <groupId>com.google.guava</groupId>
@@ -40,7 +40,7 @@
     <dependency>
       <groupId>io.netty</groupId>
       <artifactId>netty-all</artifactId>
-      <version>4.0.23.Final</version>
+      <version>4.0.25.Final</version>
       <scope>compile</scope>
     </dependency>
     <dependency>