diff --git a/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/VerifyVersion3SignaturePacketTest.java b/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/VerifyVersion3SignaturePacketTest.java
index 54b9c94b..2a12e74a 100644
--- a/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/VerifyVersion3SignaturePacketTest.java
+++ b/pgpainless-core/src/test/java/org/pgpainless/decryption_verification/VerifyVersion3SignaturePacketTest.java
@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2023 Bastien Jansen
+//
+// SPDX-License-Identifier: Apache-2.0
+
 package org.pgpainless.decryption_verification;
 
 import org.bouncycastle.openpgp.PGPException;