diff --git a/.gitignore b/.gitignore
index db55dad..ad148c2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,4 +27,14 @@ natives/samplerate/src
 natives/vorbis/*/
 udpqueue-natives/dist
 
-*.log
\ No newline at end of file
+*.log
+
+# Windows
+Thumbs.db
+desktop.ini
+
+# OS X
+.DS_Store
+.Spotlight-V100
+.Trashes
+._*
diff --git a/README.md b/README.md
index 34bff4b..7fcdc34 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ The plugin first needs to be included:
 
 ```groovy
 plugins {
-  id 'com.sedmelluq.jdaction' version '1.0.2'
+  id 'com.sedmelluq.jdaction' version '1.0.3'
 }
 ```
 
diff --git a/build.gradle b/build.gradle
index b863a9a..a34b5d3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,25 +1,16 @@
-buildscript {
-  repositories {
-    maven {
-      url 'https://plugins.gradle.org/m2/'
-    }
-  }
-  dependencies {
-    classpath 'com.gradle.publish:plugin-publish-plugin:0.9.7'
-  }
-}
-
 plugins {
   id 'java-gradle-plugin'
   id 'maven-publish'
   id 'com.jfrog.bintray' version '1.7.3'
+  id "com.gradle.plugin-publish" version "0.10.1"
 }
 
-apply plugin: 'com.gradle.plugin-publish'
+ext.moduleName = 'jdaction'
 
 group 'com.sedmelluq'
-ext.moduleName = 'jdaction'
-version = '1.0.2'
+version '1.0.3'
+
+sourceCompatibility = 1.8
 
 repositories {
   jcenter()
@@ -27,7 +18,7 @@ repositories {
 
 dependencies {
   compile gradleApi()
-  compile 'org.ow2.asm:asm-debug-all:5.0.3'
+  compile group: 'org.ow2.asm', name: 'asm-debug-all', version: '6.0_BETA'
 }
 
 gradlePlugin {
@@ -68,4 +59,4 @@ pluginBundle {
     artifactId = moduleName
     version = project.version
   }
-}
\ No newline at end of file
+}
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 51288f9..28861d2 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index a46485c..bfa8bce 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Tue Dec 20 23:58:45 EET 2016
+#Thu Mar 07 00:55:48 GMT 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.2.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10-all.zip
diff --git a/gradlew b/gradlew
old mode 100644
new mode 100755
index 4453cce..cccdd3d
--- a/gradlew
+++ b/gradlew
@@ -33,11 +33,11 @@ DEFAULT_JVM_OPTS=""
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -155,7 +155,7 @@ if $cygwin ; then
 fi
 
 # Escape application args
-save ( ) {
+save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..4581ae4
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = 'jdaction'
+
diff --git a/src/main/java/com/sedmelluq/discord/jdaction/NoActionClassVisitor.java b/src/main/java/com/sedmelluq/discord/jdaction/NoActionClassVisitor.java
index da51916..eceb41b 100644
--- a/src/main/java/com/sedmelluq/discord/jdaction/NoActionClassVisitor.java
+++ b/src/main/java/com/sedmelluq/discord/jdaction/NoActionClassVisitor.java
@@ -14,7 +14,7 @@ public class NoActionClassVisitor extends ClassVisitor {
   private int issueCount;
 
   public NoActionClassVisitor(Logger logger, boolean ignoreFailures) {
-    super(Opcodes.ASM5);
+    super(Opcodes.ASM6);
     this.logger = logger;
     this.ignoreFailures = ignoreFailures;
   }
@@ -38,7 +38,7 @@ private class UnusedReturnMethodVisitor extends MethodVisitor {
     private int lineNumber;
 
     public UnusedReturnMethodVisitor() {
-      super(Opcodes.ASM5);
+      super(Opcodes.ASM6);
     }
 
     @Override
diff --git a/src/main/java/com/sedmelluq/discord/jdaction/NoActionPlugin.java b/src/main/java/com/sedmelluq/discord/jdaction/NoActionPlugin.java
index e57cfca..20db6d4 100644
--- a/src/main/java/com/sedmelluq/discord/jdaction/NoActionPlugin.java
+++ b/src/main/java/com/sedmelluq/discord/jdaction/NoActionPlugin.java
@@ -1,9 +1,12 @@
 package com.sedmelluq.discord.jdaction;
 
+import java.util.stream.Collectors;
 import org.gradle.api.Project;
 import org.gradle.api.Task;
+import org.gradle.api.artifacts.Configuration;
 import org.gradle.api.file.FileCollection;
 import org.gradle.api.internal.ConventionMapping;
+import org.gradle.api.internal.file.UnionFileCollection;
 import org.gradle.api.plugins.quality.CodeQualityExtension;
 import org.gradle.api.plugins.quality.internal.AbstractCodeQualityPlugin;
 import org.gradle.api.tasks.SourceSet;
@@ -21,6 +24,11 @@ protected Class<NoActionVerificationTask> getTaskType() {
     return NoActionVerificationTask.class;
   }
 
+  @Override
+  protected void configureConfiguration(Configuration configuration) {
+
+  }
+
   @Override
   protected CodeQualityExtension createExtension() {
     extension = project.getExtensions().create("jdaction", Extension.class, project);
@@ -35,7 +43,9 @@ protected void configureForSourceSet(SourceSet sourceSet, NoActionVerificationTa
     taskMapping.map("classes", new Callable<FileCollection>() {
       @Override
       public FileCollection call() {
-        return project.fileTree(sourceSet.getOutput().getClassesDir()).builtBy(sourceSet.getOutput());
+        return new UnionFileCollection(sourceSet.getOutput().getClassesDirs().getFiles().stream()
+            .map(file -> project.fileTree(file).builtBy(sourceSet.getOutput()))
+            .collect(Collectors.toList()));
       }
     });