diff --git a/Makefile b/Makefile
index 7c233f0..2b93c76 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
 #
 # Copyright (C) 2023 The Falco Authors.
 #
diff --git a/examples/plugin_extract/Makefile b/examples/plugin_extract/Makefile
index 9228c9c..a7b59d6 100644
--- a/examples/plugin_extract/Makefile
+++ b/examples/plugin_extract/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
 #
 # Copyright (C) 2023 The Falco Authors.
 #
diff --git a/examples/plugin_extract/plugin.cpp b/examples/plugin_extract/plugin.cpp
index a1aa408..0c4d304 100644
--- a/examples/plugin_extract/plugin.cpp
+++ b/examples/plugin_extract/plugin.cpp
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/examples/plugin_source/Makefile b/examples/plugin_source/Makefile
index 9228c9c..a7b59d6 100644
--- a/examples/plugin_source/Makefile
+++ b/examples/plugin_source/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
 #
 # Copyright (C) 2023 The Falco Authors.
 #
diff --git a/examples/plugin_source/plugin.cpp b/examples/plugin_source/plugin.cpp
index 45e04b1..c61cf64 100644
--- a/examples/plugin_source/plugin.cpp
+++ b/examples/plugin_source/plugin.cpp
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/examples/syscall_async/Makefile b/examples/syscall_async/Makefile
index 9228c9c..a7b59d6 100644
--- a/examples/syscall_async/Makefile
+++ b/examples/syscall_async/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
 #
 # Copyright (C) 2023 The Falco Authors.
 #
diff --git a/examples/syscall_async/plugin.cpp b/examples/syscall_async/plugin.cpp
index 703d14c..b92efab 100644
--- a/examples/syscall_async/plugin.cpp
+++ b/examples/syscall_async/plugin.cpp
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/examples/syscall_extract/Makefile b/examples/syscall_extract/Makefile
index 9228c9c..a7b59d6 100644
--- a/examples/syscall_extract/Makefile
+++ b/examples/syscall_extract/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
 #
 # Copyright (C) 2023 The Falco Authors.
 #
diff --git a/examples/syscall_extract/plugin.cpp b/examples/syscall_extract/plugin.cpp
index f4e6ebe..a82bec7 100644
--- a/examples/syscall_extract/plugin.cpp
+++ b/examples/syscall_extract/plugin.cpp
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/examples/syscall_parse/Makefile b/examples/syscall_parse/Makefile
index 9228c9c..a7b59d6 100644
--- a/examples/syscall_parse/Makefile
+++ b/examples/syscall_parse/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
 #
 # Copyright (C) 2023 The Falco Authors.
 #
diff --git a/examples/syscall_parse/plugin.cpp b/examples/syscall_parse/plugin.cpp
index 6a79f26..89c7550 100644
--- a/examples/syscall_parse/plugin.cpp
+++ b/examples/syscall_parse/plugin.cpp
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/event_reader.h b/include/falcosecurity/event_reader.h
index a29c7ba..5579d47 100644
--- a/include/falcosecurity/event_reader.h
+++ b/include/falcosecurity/event_reader.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/event_writer.h b/include/falcosecurity/event_writer.h
index 0dbaed0..6bedfbd 100644
--- a/include/falcosecurity/event_writer.h
+++ b/include/falcosecurity/event_writer.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/events/decoders.h b/include/falcosecurity/events/decoders.h
index 1e8c14f..72b2e93 100644
--- a/include/falcosecurity/events/decoders.h
+++ b/include/falcosecurity/events/decoders.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/events/encoders.h b/include/falcosecurity/events/encoders.h
index a1c88e8..4d5ae5a 100644
--- a/include/falcosecurity/events/encoders.h
+++ b/include/falcosecurity/events/encoders.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/events/types.h b/include/falcosecurity/events/types.h
index a72ffbb..b54d81d 100644
--- a/include/falcosecurity/events/types.h
+++ b/include/falcosecurity/events/types.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/exception.h b/include/falcosecurity/exception.h
index 14bc62a..227f123 100644
--- a/include/falcosecurity/exception.h
+++ b/include/falcosecurity/exception.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
@@ -39,4 +40,4 @@ class plugin_exception : public std::runtime_error
     }
 };
 
-} // namespace falcosecurity
\ No newline at end of file
+} // namespace falcosecurity
diff --git a/include/falcosecurity/extract_request.h b/include/falcosecurity/extract_request.h
index e54068c..c5b4f4a 100644
--- a/include/falcosecurity/extract_request.h
+++ b/include/falcosecurity/extract_request.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/inputs.h b/include/falcosecurity/inputs.h
index e5cd268..9914acf 100644
--- a/include/falcosecurity/inputs.h
+++ b/include/falcosecurity/inputs.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/conversions.h b/include/falcosecurity/internal/conversions.h
index 1e167ed..e976da1 100644
--- a/include/falcosecurity/internal/conversions.h
+++ b/include/falcosecurity/internal/conversions.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/deps.h b/include/falcosecurity/internal/deps.h
index 4d629fa..d29a938 100644
--- a/include/falcosecurity/internal/deps.h
+++ b/include/falcosecurity/internal/deps.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/deps/plugin_api.h b/include/falcosecurity/internal/deps/plugin_api.h
index 14bfcff..3b55180 100644
--- a/include/falcosecurity/internal/deps/plugin_api.h
+++ b/include/falcosecurity/internal/deps/plugin_api.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/deps/plugin_types.h b/include/falcosecurity/internal/deps/plugin_types.h
index ac5825c..b0bfaba 100644
--- a/include/falcosecurity/internal/deps/plugin_types.h
+++ b/include/falcosecurity/internal/deps/plugin_types.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/hacks.h b/include/falcosecurity/internal/hacks.h
index ae07ac7..8d43077 100644
--- a/include/falcosecurity/internal/hacks.h
+++ b/include/falcosecurity/internal/hacks.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/plugin_mixin.h b/include/falcosecurity/internal/plugin_mixin.h
index 61a92ab..1ca02c0 100644
--- a/include/falcosecurity/internal/plugin_mixin.h
+++ b/include/falcosecurity/internal/plugin_mixin.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/plugin_mixin_async.h b/include/falcosecurity/internal/plugin_mixin_async.h
index bd89d96..7dd294e 100644
--- a/include/falcosecurity/internal/plugin_mixin_async.h
+++ b/include/falcosecurity/internal/plugin_mixin_async.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/plugin_mixin_common.h b/include/falcosecurity/internal/plugin_mixin_common.h
index 5444165..e795b98 100644
--- a/include/falcosecurity/internal/plugin_mixin_common.h
+++ b/include/falcosecurity/internal/plugin_mixin_common.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/plugin_mixin_extraction.h b/include/falcosecurity/internal/plugin_mixin_extraction.h
index ced7a22..94b59c6 100644
--- a/include/falcosecurity/internal/plugin_mixin_extraction.h
+++ b/include/falcosecurity/internal/plugin_mixin_extraction.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/plugin_mixin_parsing.h b/include/falcosecurity/internal/plugin_mixin_parsing.h
index 7f42417..0483651 100644
--- a/include/falcosecurity/internal/plugin_mixin_parsing.h
+++ b/include/falcosecurity/internal/plugin_mixin_parsing.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/plugin_mixin_sourcing.h b/include/falcosecurity/internal/plugin_mixin_sourcing.h
index 590885c..b04b0d4 100644
--- a/include/falcosecurity/internal/plugin_mixin_sourcing.h
+++ b/include/falcosecurity/internal/plugin_mixin_sourcing.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/symbols_async.h b/include/falcosecurity/internal/symbols_async.h
index 9bbd3e4..1089e48 100644
--- a/include/falcosecurity/internal/symbols_async.h
+++ b/include/falcosecurity/internal/symbols_async.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/symbols_common.h b/include/falcosecurity/internal/symbols_common.h
index 9fb2f8d..cc55740 100644
--- a/include/falcosecurity/internal/symbols_common.h
+++ b/include/falcosecurity/internal/symbols_common.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/symbols_extraction.h b/include/falcosecurity/internal/symbols_extraction.h
index 7c89250..1e4a72d 100644
--- a/include/falcosecurity/internal/symbols_extraction.h
+++ b/include/falcosecurity/internal/symbols_extraction.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/symbols_parsing.h b/include/falcosecurity/internal/symbols_parsing.h
index 6825a73..90fd146 100644
--- a/include/falcosecurity/internal/symbols_parsing.h
+++ b/include/falcosecurity/internal/symbols_parsing.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/internal/symbols_sourcing.h b/include/falcosecurity/internal/symbols_sourcing.h
index 1d3686f..4dc7b6a 100644
--- a/include/falcosecurity/internal/symbols_sourcing.h
+++ b/include/falcosecurity/internal/symbols_sourcing.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/sdk.h b/include/falcosecurity/sdk.h
index 3dafe0e..2ebd76c 100644
--- a/include/falcosecurity/sdk.h
+++ b/include/falcosecurity/sdk.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/table.h b/include/falcosecurity/table.h
index bf892d6..cebf57f 100644
--- a/include/falcosecurity/table.h
+++ b/include/falcosecurity/table.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.
 
diff --git a/include/falcosecurity/types.h b/include/falcosecurity/types.h
index 78087d5..bae6d7d 100644
--- a/include/falcosecurity/types.h
+++ b/include/falcosecurity/types.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
 /*
 Copyright (C) 2023 The Falco Authors.