diff --git a/pom.xml b/pom.xml
index 71af32c1..070602bf 100644
--- a/pom.xml
+++ b/pom.xml
@@ -57,8 +57,9 @@
     </ciManagement>
 
     <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <build.number>unknown</build.number>
+        <netty.version>4.0.0.Beta3-SNAPSHOT</netty.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
     <dependencies>
diff --git a/protocol/pom.xml b/protocol/pom.xml
index 8e0a4416..e12cbdcb 100644
--- a/protocol/pom.xml
+++ b/protocol/pom.xml
@@ -22,7 +22,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-buffer</artifactId>
-            <version>4.0.0.Beta3-SNAPSHOT</version>
+            <version>${netty.version}</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>
diff --git a/proxy/pom.xml b/proxy/pom.xml
index ab7a764c..5e0de525 100644
--- a/proxy/pom.xml
+++ b/proxy/pom.xml
@@ -21,8 +21,13 @@
     <dependencies>
         <dependency>
             <groupId>io.netty</groupId>
-            <artifactId>netty-all</artifactId>
-            <version>4.0.0.Beta3-SNAPSHOT</version>
+            <artifactId>netty-codec</artifactId>
+            <version>${netty.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-handler</artifactId>
+            <version>${netty.version}</version>
         </dependency>
         <dependency>
             <groupId>net.md-5</groupId>