diff --git a/libs/ja-netfilter.jar b/libs/ja-netfilter.jar
index fd9100c..920ebee 100644
Binary files a/libs/ja-netfilter.jar and b/libs/ja-netfilter.jar differ
diff --git a/src/main/java/my/sample/plugin/MyPluginEntry.java b/src/main/java/my/sample/plugin/MyPluginEntry.java
index d333138..3893202 100644
--- a/src/main/java/my/sample/plugin/MyPluginEntry.java
+++ b/src/main/java/my/sample/plugin/MyPluginEntry.java
@@ -1,7 +1,7 @@
 package my.sample.plugin;
 
+import io.zhile.research.ja.netfilter.plugin.MyTransformer;
 import io.zhile.research.ja.netfilter.plugin.PluginEntry;
-import io.zhile.research.ja.netfilter.transformers.MyTransformer;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -18,6 +18,11 @@ public class MyPluginEntry implements PluginEntry {
         return "SamplePlugin";
     }
 
+    @Override
+    public String getAuthor() {
+        return "neo";
+    }
+
     @Override
     public String getVersion() {
         return "v1.0.0";
diff --git a/src/main/java/my/sample/plugin/TestTransformer.java b/src/main/java/my/sample/plugin/TestTransformer.java
index b5b2a32..c4bafd2 100644
--- a/src/main/java/my/sample/plugin/TestTransformer.java
+++ b/src/main/java/my/sample/plugin/TestTransformer.java
@@ -1,11 +1,12 @@
 package my.sample.plugin;
 
-import io.zhile.research.ja.netfilter.transformers.MyTransformer;
+
+import io.zhile.research.ja.netfilter.plugin.MyTransformer;
 
 public class TestTransformer implements MyTransformer {
     @Override
     public String getHookClassName() {
-        return "java/lang/String";
+        return "sun/security/x509/X509CertImpl";
     }
 
     @Override