diff --git a/phase4-lib/src/main/java/com/helger/phase4/crypto/AS4KeyStoreDescriptor.java b/phase4-lib/src/main/java/com/helger/phase4/crypto/AS4KeyStoreDescriptor.java
index 3eeb07e10..1bf086746 100644
--- a/phase4-lib/src/main/java/com/helger/phase4/crypto/AS4KeyStoreDescriptor.java
+++ b/phase4-lib/src/main/java/com/helger/phase4/crypto/AS4KeyStoreDescriptor.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015-2024 Philip Helger (www.helger.com)
+ * philip[at]helger[dot]com
+ *
+ * Licensed 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 com.helger.phase4.crypto;
 
 import java.security.KeyStore.PrivateKeyEntry;
diff --git a/phase4-lib/src/main/java/com/helger/phase4/crypto/AS4TrustStoreDescriptor.java b/phase4-lib/src/main/java/com/helger/phase4/crypto/AS4TrustStoreDescriptor.java
index 169231fcd..cb8a9433a 100644
--- a/phase4-lib/src/main/java/com/helger/phase4/crypto/AS4TrustStoreDescriptor.java
+++ b/phase4-lib/src/main/java/com/helger/phase4/crypto/AS4TrustStoreDescriptor.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015-2024 Philip Helger (www.helger.com)
+ * philip[at]helger[dot]com
+ *
+ * Licensed 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 com.helger.phase4.crypto;
 
 import java.security.Provider;
diff --git a/phase4-lib/src/main/java/com/helger/phase4/crypto/CAS4Crypto.java b/phase4-lib/src/main/java/com/helger/phase4/crypto/CAS4Crypto.java
index 3ede24943..4034379cb 100644
--- a/phase4-lib/src/main/java/com/helger/phase4/crypto/CAS4Crypto.java
+++ b/phase4-lib/src/main/java/com/helger/phase4/crypto/CAS4Crypto.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015-2024 Philip Helger (www.helger.com)
+ * philip[at]helger[dot]com
+ *
+ * Licensed 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 com.helger.phase4.crypto;
 
 import javax.annotation.concurrent.Immutable;
diff --git a/phase4-lib/src/main/java/com/helger/phase4/crypto/IAS4KeyStoreDescriptor.java b/phase4-lib/src/main/java/com/helger/phase4/crypto/IAS4KeyStoreDescriptor.java
index db09117fd..021b3302e 100644
--- a/phase4-lib/src/main/java/com/helger/phase4/crypto/IAS4KeyStoreDescriptor.java
+++ b/phase4-lib/src/main/java/com/helger/phase4/crypto/IAS4KeyStoreDescriptor.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015-2024 Philip Helger (www.helger.com)
+ * philip[at]helger[dot]com
+ *
+ * Licensed 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 com.helger.phase4.crypto;
 
 import java.security.KeyStore.PrivateKeyEntry;
diff --git a/phase4-lib/src/main/java/com/helger/phase4/crypto/IAS4TrustStoreDescriptor.java b/phase4-lib/src/main/java/com/helger/phase4/crypto/IAS4TrustStoreDescriptor.java
index ae891ab30..db1937d6a 100644
--- a/phase4-lib/src/main/java/com/helger/phase4/crypto/IAS4TrustStoreDescriptor.java
+++ b/phase4-lib/src/main/java/com/helger/phase4/crypto/IAS4TrustStoreDescriptor.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright (C) 2015-2024 Philip Helger (www.helger.com)
+ * philip[at]helger[dot]com
+ *
+ * Licensed 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 com.helger.phase4.crypto;
 
 import java.security.Provider;