diff --git a/pom.xml b/pom.xml
index ac8adf6..b606e60 100644
--- a/pom.xml
+++ b/pom.xml
@@ -273,13 +273,13 @@
       <dependency>
         <groupId>org.apache.mina</groupId>
         <artifactId>mina-core</artifactId>
-        <version>2.0.2</version>
+        <version>2.0.4</version>
       </dependency>
 
       <dependency>
         <groupId>org.slf4j</groupId>
         <artifactId>slf4j-log4j12</artifactId>
-        <version>1.5.2</version>
+        <version>1.7.1</version>
       </dependency>
 
       <dependency>
@@ -297,7 +297,7 @@
       <dependency>
         <groupId>log4j</groupId>
         <artifactId>log4j</artifactId>
-        <version>1.2.14</version>
+        <version>1.2.17</version>
       </dependency>
 
       <dependency>