4 files changed, 16 insertions, 0 deletions
diff --git a/asl/io/BUILD.bazel b/asl/io/BUILD.bazel
index b37787c..b25f2fe 100644
--- a/asl/io/BUILD.bazel
+++ b/asl/io/BUILD.bazel
@@ -1,3 +1,7 @@
+# Copyright 2025 Steven Le Rouzic
+#
+# SPDX-License-Identifier: BSD-3-Clause
+
 cc_library(
     name = "writer",
     hdrs = [
diff --git a/asl/io/print.cpp b/asl/io/print.cpp
index 0161bd1..5b48eef 100644
--- a/asl/io/print.cpp
+++ b/asl/io/print.cpp
@@ -1,3 +1,7 @@
+// Copyright 2025 Steven Le Rouzic
+//
+// SPDX-License-Identifier: BSD-3-Clause
+
 #include "asl/io/print.hpp"
 
 #include <cstdio>
diff --git a/asl/io/print.hpp b/asl/io/print.hpp
index a1899a8..b066609 100644
--- a/asl/io/print.hpp
+++ b/asl/io/print.hpp
@@ -1,3 +1,7 @@
+// Copyright 2025 Steven Le Rouzic
+//
+// SPDX-License-Identifier: BSD-3-Clause
+
 #pragma once
 
 #include "asl/formatting/format.hpp"
diff --git a/asl/io/writer.hpp b/asl/io/writer.hpp
index e3cb313..b5aab62 100644
--- a/asl/io/writer.hpp
+++ b/asl/io/writer.hpp
@@ -1,3 +1,7 @@
+// Copyright 2025 Steven Le Rouzic
+//
+// SPDX-License-Identifier: BSD-3-Clause
+
 #pragma once
 
 #include "asl/base/integers.hpp"