diff --git a/.gitignore b/.gitignore
index 7507685..4df157e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -62,3 +62,4 @@ atlassian-ide-plugin.xml
 # NetBeans specific files/directories
 .nbattrs
 .nb-gradle
+/bin/
diff --git a/build.gradle b/build.gradle
index 697f967..50f8a7e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -64,8 +64,8 @@ project(':jarjar-testdata') {
 
 project(':jarjar-core') {
 	dependencies {
-		compile 'org.ow2.asm:asm-commons:5.0.3'
-		compile 'org.ow2.asm:asm-util:5.0.3'
+		compile 'org.ow2.asm:asm-commons:8.0.1'
+		compile 'org.ow2.asm:asm-util:8.0.1'
 		// compile 'org.ow2.asm:asm-commons:4.0'
 
 		// testCompile project(':jarjar-testdata')
diff --git a/jarjar-core/src/main/java/com/tonicsystems/jarjar/dependencies/DependencyFinderClassVisitor.java b/jarjar-core/src/main/java/com/tonicsystems/jarjar/dependencies/DependencyFinderClassVisitor.java
index 968a4c5..aa1f696 100644
--- a/jarjar-core/src/main/java/com/tonicsystems/jarjar/dependencies/DependencyFinderClassVisitor.java
+++ b/jarjar-core/src/main/java/com/tonicsystems/jarjar/dependencies/DependencyFinderClassVisitor.java
@@ -18,10 +18,11 @@
 import com.tonicsystems.jarjar.util.RuntimeIOException;
 import java.io.IOException;
 import java.util.Map;
+
+import org.objectweb.asm.commons.ClassRemapper;
 import org.objectweb.asm.commons.Remapper;
-import org.objectweb.asm.commons.RemappingClassAdapter;
 
-class DependencyFinderClassVisitor extends RemappingClassAdapter {
+class DependencyFinderClassVisitor extends ClassRemapper {
 
     public DependencyFinderClassVisitor(Map<String, String> classToArchiveMap, String archiveName, DependencyHandler handler) throws IOException {
         super(null, new DependencyFinderRemapper(classToArchiveMap, archiveName, handler));
diff --git a/jarjar-core/src/main/java/com/tonicsystems/jarjar/transform/asm/RemappingClassTransformer.java b/jarjar-core/src/main/java/com/tonicsystems/jarjar/transform/asm/RemappingClassTransformer.java
index a30341c..7a83e1d 100644
--- a/jarjar-core/src/main/java/com/tonicsystems/jarjar/transform/asm/RemappingClassTransformer.java
+++ b/jarjar-core/src/main/java/com/tonicsystems/jarjar/transform/asm/RemappingClassTransformer.java
@@ -7,8 +7,8 @@
 
 import javax.annotation.Nonnull;
 import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.commons.ClassRemapper;
 import org.objectweb.asm.commons.Remapper;
-import org.objectweb.asm.commons.RemappingClassAdapter;
 
 /**
  *
@@ -24,7 +24,7 @@ public RemappingClassTransformer(@Nonnull Remapper remapper) {
 
     @Override
     public ClassVisitor transform(ClassVisitor v) {
-        return new RemappingClassAdapter(v, remapper);
+        return new ClassRemapper(v, remapper);
     }
 
 }
diff --git a/jarjar-core/src/main/java/com/tonicsystems/jarjar/transform/jar/ClassClosureJarProcessor.java b/jarjar-core/src/main/java/com/tonicsystems/jarjar/transform/jar/ClassClosureJarProcessor.java
index c5f9318..72c0451 100644
--- a/jarjar-core/src/main/java/com/tonicsystems/jarjar/transform/jar/ClassClosureJarProcessor.java
+++ b/jarjar-core/src/main/java/com/tonicsystems/jarjar/transform/jar/ClassClosureJarProcessor.java
@@ -31,8 +31,8 @@
 import java.util.Set;
 import javax.annotation.Nonnull;
 import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.commons.ClassRemapper;
 import org.objectweb.asm.commons.Remapper;
-import org.objectweb.asm.commons.RemappingClassAdapter;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -106,7 +106,7 @@ public Result scan(Transformable struct) throws IOException {
                         roots.add(name);
                 DependencyCollector collector = new DependencyCollector();
                 dependencies.put(name, collector.dependencies);
-                new ClassReader(new ByteArrayInputStream(struct.data)).accept(new RemappingClassAdapter(null, collector), ClassReader.EXPAND_FRAMES);
+                new ClassReader(new ByteArrayInputStream(struct.data)).accept(new ClassRemapper(null, collector), ClassReader.EXPAND_FRAMES);
                 collector.dependencies.remove(name);
             }
         } catch (Exception e) {
diff --git a/jarjar-core/src/test/java/com/tonicsystems/jarjar/GenericsTest.java b/jarjar-core/src/test/java/com/tonicsystems/jarjar/GenericsTest.java
index a707947..6895f51 100644
--- a/jarjar-core/src/test/java/com/tonicsystems/jarjar/GenericsTest.java
+++ b/jarjar-core/src/test/java/com/tonicsystems/jarjar/GenericsTest.java
@@ -19,14 +19,14 @@
 import com.tonicsystems.jarjar.transform.config.ClassRename;
 import org.junit.Test;
 import org.objectweb.asm.ClassReader;
-import org.objectweb.asm.commons.RemappingClassAdapter;
+import org.objectweb.asm.commons.ClassRemapper;
 
 public class GenericsTest {
 
     @Test
     public void testTransform() throws Exception {
         ClassRename rule = new ClassRename("java.lang.String", "com.tonicsystems.String");
-        RemappingClassAdapter t = new RemappingClassAdapter(null, new PackageRemapper(rule));
+        ClassRemapper t = new ClassRemapper(null, new PackageRemapper(rule));
         ClassReader reader = new ClassReader(getClass().getResourceAsStream("/Generics.class"));
         reader.accept(t, 0);
     }
diff --git a/jarjar-gradle/src/main/java/org/anarres/gradle/plugin/jarjar/JarjarTask.java b/jarjar-gradle/src/main/java/org/anarres/gradle/plugin/jarjar/JarjarTask.java
index 190fb47..39fe709 100644
--- a/jarjar-gradle/src/main/java/org/anarres/gradle/plugin/jarjar/JarjarTask.java
+++ b/jarjar-gradle/src/main/java/org/anarres/gradle/plugin/jarjar/JarjarTask.java
@@ -31,6 +31,7 @@
 import org.gradle.api.specs.Spec;
 import org.gradle.api.tasks.Input;
 import org.gradle.api.tasks.InputFiles;
+import org.gradle.api.tasks.OutputDirectory;
 import org.gradle.api.tasks.OutputFile;
 import org.gradle.api.tasks.OutputFiles;
 import org.gradle.api.tasks.TaskAction;
@@ -100,7 +101,7 @@ private static Iterable<Pattern> toPatterns(@Nonnull Iterable<? extends String>.
     @Input
     private final Set<String> archiveExcludes = new HashSet<String>();
 
-    @OutputFile
+    @OutputDirectory
     private File destinationDir;
 
     @Input