diff --git a/build.gradle b/build.gradle
index f7dff7e..ad1d6d1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ plugins {
 }
 
 group 'dev.xdark'
-version '2.0.0'
+version '2.0.1'
 
 repositories {
     mavenCentral()
diff --git a/src/main/java/dev/xdark/jlinker/ClassInfo.java b/src/main/java/dev/xdark/jlinker/ClassInfo.java
index 9f8eb78..056d99c 100644
--- a/src/main/java/dev/xdark/jlinker/ClassInfo.java
+++ b/src/main/java/dev/xdark/jlinker/ClassInfo.java
@@ -35,7 +35,7 @@ public interface ClassInfo {
      * @param descriptor Method descriptor.
      * @return Class method.
      */
-    @Nullable MethodInfo getMethod(String name, Descriptor descriptor);
+    @Nullable MethodInfo getMethod(String name, MethodDescriptor descriptor);
 
     /**
      * Implementation may throw any exception.
@@ -44,5 +44,5 @@ public interface ClassInfo {
      * @param descriptor Field descriptor.
      * @return Class field.
      */
-    @Nullable FieldInfo getField(String name, Descriptor descriptor);
+    @Nullable FieldInfo getField(String name, FieldDescriptor descriptor);
 }
diff --git a/src/test/java/dev/xdark/jlinker/MyClassInfo.java b/src/test/java/dev/xdark/jlinker/MyClassInfo.java
index 2b42653..28031b6 100755
--- a/src/test/java/dev/xdark/jlinker/MyClassInfo.java
+++ b/src/test/java/dev/xdark/jlinker/MyClassInfo.java
@@ -35,7 +35,7 @@ public int getAccessFlags() {
 	}
 
 	@Override
-	public @Nullable MethodInfo getMethod(String name, Descriptor descriptor) {
+	public @Nullable MethodInfo getMethod(String name, MethodDescriptor descriptor) {
 		String descriptorString = descriptor.toString();
 		for (MethodNode m : node.methods) {
 			if (name.equals(m.name) && descriptorString.equals(m.desc)) {
@@ -46,7 +46,7 @@ public int getAccessFlags() {
 	}
 
 	@Override
-	public @Nullable FieldInfo getField(String name, Descriptor descriptor) {
+	public @Nullable FieldInfo getField(String name, FieldDescriptor descriptor) {
 		String descriptorString = descriptor.toString();
 		for (FieldNode f : node.fields) {
 			if (name.equals(f.name) && descriptorString.equals(f.desc)) {