diff --git a/src/main/java/ysoserial/payloads/FileUpload1.java b/src/main/java/ysoserial/payloads/FileUpload1.java
index e10ef9a..df21a29 100644
--- a/src/main/java/ysoserial/payloads/FileUpload1.java
+++ b/src/main/java/ysoserial/payloads/FileUpload1.java
@@ -14,6 +14,7 @@ import org.apache.commons.io.output.ThresholdingOutputStream;
 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;
 
@@ -40,9 +41,12 @@ import ysoserial.payloads.util.Reflections;
     "commons-fileupload:commons-fileupload:1.3.1",
     "commons-io:commons-io:2.4"
 } )
-@PayloadTest(harness="ysoserial.payloads.FileUploadTest")
+@PayloadTest(harness="ysoserial.payloads.FileUploadTest", precondition = "isApplicableJavaVersion")
 @Authors({ Authors.MBECHLER })
 public class FileUpload1 implements ReleaseableObjectPayload<DiskFileItem> {
+    public static boolean isApplicableJavaVersion() {
+        return JavaVersion.isAtLeast(7);
+    }
 
     public DiskFileItem getObject ( String command ) throws Exception {
 
diff --git a/src/main/java/ysoserial/payloads/Hibernate1.java b/src/main/java/ysoserial/payloads/Hibernate1.java
index edae938..61e6179 100644
--- a/src/main/java/ysoserial/payloads/Hibernate1.java
+++ b/src/main/java/ysoserial/payloads/Hibernate1.java
@@ -17,7 +17,9 @@ import org.hibernate.type.Type;
 import org.hibernate.EntityMode;
 
 import ysoserial.payloads.annotation.Authors;
+import ysoserial.payloads.annotation.PayloadTest;
 import ysoserial.payloads.util.Gadgets;
+import ysoserial.payloads.util.JavaVersion;
 import ysoserial.payloads.util.PayloadRunner;
 import ysoserial.payloads.util.Reflections;
 
@@ -40,7 +42,11 @@ import ysoserial.payloads.util.Reflections;
  * @author mbechler
  */
 @Authors({ Authors.MBECHLER })
+@PayloadTest(precondition = "isApplicableJavaVersion")
 public class Hibernate1 implements ObjectPayload<Object>, DynamicDependencies {
+    public static boolean isApplicableJavaVersion() {
+        return JavaVersion.isAtLeast(7);
+    }
 
     public static String[] getDependencies () {
         if ( System.getProperty("hibernate5") != null ) {
diff --git a/src/main/java/ysoserial/payloads/Hibernate2.java b/src/main/java/ysoserial/payloads/Hibernate2.java
index 0ab32c7..455cee6 100644
--- a/src/main/java/ysoserial/payloads/Hibernate2.java
+++ b/src/main/java/ysoserial/payloads/Hibernate2.java
@@ -3,6 +3,7 @@ package ysoserial.payloads;
 
 import ysoserial.payloads.annotation.Authors;
 import ysoserial.payloads.annotation.PayloadTest;
+import ysoserial.payloads.util.JavaVersion;
 import ysoserial.payloads.util.PayloadRunner;
 
 import com.sun.rowset.JdbcRowSetImpl;
@@ -41,9 +42,12 @@ import com.sun.rowset.JdbcRowSetImpl;
 @SuppressWarnings ( {
     "restriction"
 } )
-@PayloadTest( harness = "ysoserial.payloads.JRMPReverseConnectTest")
+@PayloadTest(harness = "ysoserial.payloads.JRMPReverseConnectTest", precondition = "isApplicableJavaVersion")
 @Authors({ Authors.MBECHLER })
 public class Hibernate2 implements ObjectPayload<Object>, DynamicDependencies {
+    public static boolean isApplicableJavaVersion() {
+        return JavaVersion.isAtLeast(7);
+    }
 
     public static String[] getDependencies () {
         return Hibernate1.getDependencies();
diff --git a/src/main/java/ysoserial/payloads/JBossInterceptors1.java b/src/main/java/ysoserial/payloads/JBossInterceptors1.java
index 7fe37a5..9f1e294 100644
--- a/src/main/java/ysoserial/payloads/JBossInterceptors1.java
+++ b/src/main/java/ysoserial/payloads/JBossInterceptors1.java
@@ -16,7 +16,9 @@ import org.jboss.interceptor.spi.model.InterceptionModel;
 import org.jboss.interceptor.spi.model.InterceptionType;
 import ysoserial.payloads.annotation.Authors;
 import ysoserial.payloads.annotation.Dependencies;
+import ysoserial.payloads.annotation.PayloadTest;
 import ysoserial.payloads.util.Gadgets;
+import ysoserial.payloads.util.JavaVersion;
 import ysoserial.payloads.util.PayloadRunner;
 
 import java.lang.reflect.Constructor;
@@ -26,11 +28,15 @@ import java.util.*;
     by @matthias_kaiser
 */
 @SuppressWarnings({"rawtypes", "unchecked"})
+@PayloadTest(precondition = "isApplicableJavaVersion")
 @Dependencies({ "javassist:javassist:3.12.1.GA", "org.jboss.interceptor:jboss-interceptor-core:2.0.0.Final",
     "javax.enterprise:cdi-api:1.0-SP1", "javax.interceptor:javax.interceptor-api:3.1",
     "org.jboss.interceptor:jboss-interceptor-spi:2.0.0.Final", "org.slf4j:slf4j-api:1.7.21" })
 @Authors({ Authors.MATTHIASKAISER })
 public class JBossInterceptors1 implements ObjectPayload<Object> {
+    public static boolean isApplicableJavaVersion() {
+        return JavaVersion.isAtLeast(7);
+    }
 
     public Object getObject(final String command) throws Exception {
 
diff --git a/src/main/java/ysoserial/payloads/JavassistWeld1.java b/src/main/java/ysoserial/payloads/JavassistWeld1.java
index cb1c601..3b08e61 100644
--- a/src/main/java/ysoserial/payloads/JavassistWeld1.java
+++ b/src/main/java/ysoserial/payloads/JavassistWeld1.java
@@ -16,7 +16,9 @@ import org.jboss.weld.interceptor.spi.model.InterceptionModel;
 import org.jboss.weld.interceptor.spi.model.InterceptionType;
 import ysoserial.payloads.annotation.Authors;
 import ysoserial.payloads.annotation.Dependencies;
+import ysoserial.payloads.annotation.PayloadTest;
 import ysoserial.payloads.util.Gadgets;
+import ysoserial.payloads.util.JavaVersion;
 import ysoserial.payloads.util.PayloadRunner;
 
 import java.lang.reflect.Constructor;
@@ -26,11 +28,15 @@ import java.util.*;
     by @matthias_kaiser
 */
 @SuppressWarnings({"rawtypes", "unchecked"})
+@PayloadTest(precondition = "isApplicableJavaVersion")
 @Dependencies({"javassist:javassist:3.12.1.GA", "org.jboss.weld:weld-core:1.1.33.Final",
     "javax.enterprise:cdi-api:1.0-SP1", "javax.interceptor:javax.interceptor-api:3.1",
     "org.jboss.interceptor:jboss-interceptor-spi:2.0.0.Final", "org.slf4j:slf4j-api:1.7.21" })
 @Authors({ Authors.MATTHIASKAISER })
 public class JavassistWeld1 implements ObjectPayload<Object> {
+    public static boolean isApplicableJavaVersion() {
+        return JavaVersion.isAtLeast(7);
+    }
 
     public Object getObject(final String command) throws Exception {
 
diff --git a/src/main/java/ysoserial/payloads/Myfaces2.java b/src/main/java/ysoserial/payloads/Myfaces2.java
index 1683e43..72c828e 100644
--- a/src/main/java/ysoserial/payloads/Myfaces2.java
+++ b/src/main/java/ysoserial/payloads/Myfaces2.java
@@ -4,6 +4,7 @@ package ysoserial.payloads;
 
 import ysoserial.payloads.annotation.Authors;
 import ysoserial.payloads.annotation.PayloadTest;
+import ysoserial.payloads.util.JavaVersion;
 import ysoserial.payloads.util.PayloadRunner;
 
 
@@ -28,9 +29,12 @@ import ysoserial.payloads.util.PayloadRunner;
  *
  * @author mbechler
  */
-@PayloadTest ( harness = "ysoserial.payloads.MyfacesTest" )
+@PayloadTest(harness = "ysoserial.payloads.MyfacesTest", precondition = "isApplicableJavaVersion")
 @Authors({ Authors.MBECHLER })
 public class Myfaces2 implements ObjectPayload<Object>, DynamicDependencies {
+    public static boolean isApplicableJavaVersion() {
+        return JavaVersion.isAtLeast(7);
+    }
 
     public static String[] getDependencies () {
         return Myfaces1.getDependencies();
diff --git a/src/main/java/ysoserial/payloads/util/JavaVersion.java b/src/main/java/ysoserial/payloads/util/JavaVersion.java
index 9eaa451..bba90b9 100644
--- a/src/main/java/ysoserial/payloads/util/JavaVersion.java
+++ b/src/main/java/ysoserial/payloads/util/JavaVersion.java
@@ -27,7 +27,6 @@ public class JavaVersion {
         return v;
     }
 
-
     public static boolean isAnnInvHUniversalMethodImpl() {
         JavaVersion v = JavaVersion.getLocalVersion();
         return v != null && (v.major < 8 || (v.major == 8 && v.update <= 71));
@@ -37,5 +36,10 @@ public class JavaVersion {
         JavaVersion v = JavaVersion.getLocalVersion();
         return v != null && (v.major > 8 && v.update >= 76);
     }
+
+    public static boolean isAtLeast(int major) {
+        JavaVersion v = JavaVersion.getLocalVersion();
+        return v != null && v.major >= major;
+    }
 }
 
diff --git a/src/test/java/ysoserial/payloads/PayloadsTest.java b/src/test/java/ysoserial/payloads/PayloadsTest.java
index 9a29e8e..3713486 100644
--- a/src/test/java/ysoserial/payloads/PayloadsTest.java
+++ b/src/test/java/ysoserial/payloads/PayloadsTest.java
@@ -71,7 +71,6 @@ public class PayloadsTest {
     public static void testPayload ( final Class<? extends ObjectPayload<?>> payloadClass, final Class<?>[] addlClassesForClassLoader )
             throws Exception {
         String command = "hostname";
-        String[] deps = buildDeps(payloadClass);
 
         PayloadTest t = payloadClass.getAnnotation(PayloadTest.class);
 
@@ -85,6 +84,7 @@ public class PayloadsTest {
             }
         }
 
+        String[] deps = buildDeps(payloadClass);
         String payloadCommand = command;
         Class<?> customDeserializer = null;
         Object testHarness = null;