diff --git a/asm4/src/test/java/org/apache/commons/proxy2/asm4/TestAsm4ProxyFactory.java b/asm4/src/test/java/org/apache/commons/proxy2/asm4/TestAsm4ProxyFactory.java
index 7808e84..682e948 100644
--- a/asm4/src/test/java/org/apache/commons/proxy2/asm4/TestAsm4ProxyFactory.java
+++ b/asm4/src/test/java/org/apache/commons/proxy2/asm4/TestAsm4ProxyFactory.java
@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.commons.proxy2.asm4;
 
 import org.apache.commons.proxy2.AbstractSubclassingProxyFactoryTestCase;
diff --git a/core/src/main/java/org/apache/commons/proxy2/impl/AbstractSubclassingProxyFactory.java b/core/src/main/java/org/apache/commons/proxy2/impl/AbstractSubclassingProxyFactory.java
index b87499b..46f4243 100644
--- a/core/src/main/java/org/apache/commons/proxy2/impl/AbstractSubclassingProxyFactory.java
+++ b/core/src/main/java/org/apache/commons/proxy2/impl/AbstractSubclassingProxyFactory.java
@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.commons.proxy2.impl;
 
 import org.apache.commons.proxy2.exception.ProxyFactoryException;
diff --git a/core/src/main/java/org/apache/commons/proxy2/stub/TrainingContext.java b/core/src/main/java/org/apache/commons/proxy2/stub/TrainingContext.java
index c0ad666..e737de3 100644
--- a/core/src/main/java/org/apache/commons/proxy2/stub/TrainingContext.java
+++ b/core/src/main/java/org/apache/commons/proxy2/stub/TrainingContext.java
@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.commons.proxy2.stub;
 
 import org.apache.commons.lang3.ArrayUtils;
diff --git a/core/src/test/java/org/apache/commons/proxy2/util/AbstractTestCase.java b/core/src/test/java/org/apache/commons/proxy2/util/AbstractTestCase.java
index 78fb664..da5c228 100644
--- a/core/src/test/java/org/apache/commons/proxy2/util/AbstractTestCase.java
+++ b/core/src/test/java/org/apache/commons/proxy2/util/AbstractTestCase.java
@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.commons.proxy2.util;
 
 import org.apache.commons.lang3.SerializationUtils;
@@ -13,7 +29,7 @@
 
 /**
  * @author James Carman
- * @since 1.1
+ * @since 2.0
  */
 public abstract class AbstractTestCase
 {
diff --git a/core/src/test/java/org/apache/commons/proxy2/util/MockInvocation.java b/core/src/test/java/org/apache/commons/proxy2/util/MockInvocation.java
index 92c74e5..0ba7c45 100644
--- a/core/src/test/java/org/apache/commons/proxy2/util/MockInvocation.java
+++ b/core/src/test/java/org/apache/commons/proxy2/util/MockInvocation.java
@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.commons.proxy2.util;
 
 import org.apache.commons.proxy2.Invocation;
diff --git a/javassist/src/test/java/org/apache/commons/proxy2/javassist/JavassistProxyFactoryTest.java b/javassist/src/test/java/org/apache/commons/proxy2/javassist/JavassistProxyFactoryTest.java
index 9eeea9e..ac53c6b 100644
--- a/javassist/src/test/java/org/apache/commons/proxy2/javassist/JavassistProxyFactoryTest.java
+++ b/javassist/src/test/java/org/apache/commons/proxy2/javassist/JavassistProxyFactoryTest.java
@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.commons.proxy2.javassist;
 
 import org.apache.commons.proxy2.AbstractSubclassingProxyFactoryTestCase;
diff --git a/jdk/src/test/java/org/apache/commons/proxy2/jdk/JdkProxyFactoryTest.java b/jdk/src/test/java/org/apache/commons/proxy2/jdk/JdkProxyFactoryTest.java
index f157a25..584001d 100644
--- a/jdk/src/test/java/org/apache/commons/proxy2/jdk/JdkProxyFactoryTest.java
+++ b/jdk/src/test/java/org/apache/commons/proxy2/jdk/JdkProxyFactoryTest.java
@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.commons.proxy2.jdk;
 
 import org.apache.commons.proxy2.AbstractProxyFactoryTestCase;
diff --git a/test/src/test/java/org/apache/commons/proxy2/stub/AbstractStubTestCase.java b/test/src/test/java/org/apache/commons/proxy2/stub/AbstractStubTestCase.java
index 2a464c9..85bf1e4 100644
--- a/test/src/test/java/org/apache/commons/proxy2/stub/AbstractStubTestCase.java
+++ b/test/src/test/java/org/apache/commons/proxy2/stub/AbstractStubTestCase.java
@@ -1,3 +1,19 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.apache.commons.proxy2.stub;
 
 import static org.junit.Assert.assertArrayEquals;