diff --git a/tests/src/unit-make1.cpp b/tests/src/unit-make1.cpp
index 5e4effeb4..827d588cd 100644
--- a/tests/src/unit-make1.cpp
+++ b/tests/src/unit-make1.cpp
@@ -1,4 +1,11 @@
-// test_json_suite_extended.cpp
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
 #include "doctest_compatibility.h"
 #include <nlohmann/json.hpp>
 using nlohmann::json;
diff --git a/tests/src/unit-make2.cpp b/tests/src/unit-make2.cpp
index a68f67943..0e61efb2e 100644
--- a/tests/src/unit-make2.cpp
+++ b/tests/src/unit-make2.cpp
@@ -1,4 +1,11 @@
-// test_json_suite.cpp
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
 #include "doctest_compatibility.h"
 #include <nlohmann/json.hpp>
 using nlohmann::json;
diff --git a/tests/src/unit-make3.cpp b/tests/src/unit-make3.cpp
index 2dfb0cd8b..bd162b0cf 100644
--- a/tests/src/unit-make3.cpp
+++ b/tests/src/unit-make3.cpp
@@ -1,4 +1,11 @@
-// test_json_suite_more.cpp
+//     __ _____ _____ _____
+//  __|  |   __|     |   | |  JSON for Modern C++ (supporting code)
+// |  |  |__   |  |  | | | |  version 3.11.3
+// |_____|_____|_____|_|___|  https://github.com/nlohmann/json
+//
+// SPDX-FileCopyrightText: 2013-2023 Niels Lohmann <https://nlohmann.me>
+// SPDX-License-Identifier: MIT
+
 #include "doctest_compatibility.h"
 #include <nlohmann/json.hpp>
 using nlohmann::json;