diff --git a/src/audio_core/renderer/behavior/behavior_info.h b/src/audio_core/renderer/behavior/behavior_info.h
index 57c7a4023a..8e9333579e 100644
--- a/src/audio_core/renderer/behavior/behavior_info.h
+++ b/src/audio_core/renderer/behavior/behavior_info.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/src/audio_core/renderer/command/effect/biquad_filter.h b/src/audio_core/renderer/command/effect/biquad_filter.h
index 5f4626c326..0e1893e536 100644
--- a/src/audio_core/renderer/command/effect/biquad_filter.h
+++ b/src/audio_core/renderer/command/effect/biquad_filter.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/src/audio_core/renderer/command/effect/multi_tap_biquad_filter.cpp b/src/audio_core/renderer/command/effect/multi_tap_biquad_filter.cpp
index 78cd4e06d8..2dfbcf6145 100644
--- a/src/audio_core/renderer/command/effect/multi_tap_biquad_filter.cpp
+++ b/src/audio_core/renderer/command/effect/multi_tap_biquad_filter.cpp
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/src/audio_core/renderer/command/effect/multi_tap_biquad_filter.h b/src/audio_core/renderer/command/effect/multi_tap_biquad_filter.h
index f8c359bdc1..35fa76f62d 100644
--- a/src/audio_core/renderer/command/effect/multi_tap_biquad_filter.h
+++ b/src/audio_core/renderer/command/effect/multi_tap_biquad_filter.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/src/audio_core/renderer/splitter/splitter_context.h b/src/audio_core/renderer/splitter/splitter_context.h
index 6f5ec65746..7b1fc7a3b9 100644
--- a/src/audio_core/renderer/splitter/splitter_context.h
+++ b/src/audio_core/renderer/splitter/splitter_context.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/src/audio_core/renderer/splitter/splitter_destinations_data.cpp b/src/audio_core/renderer/splitter/splitter_destinations_data.cpp
index 58e1d7d562..028cee9853 100644
--- a/src/audio_core/renderer/splitter/splitter_destinations_data.cpp
+++ b/src/audio_core/renderer/splitter/splitter_destinations_data.cpp
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/src/audio_core/renderer/splitter/splitter_destinations_data.h b/src/audio_core/renderer/splitter/splitter_destinations_data.h
index 3b76b6bd4e..70ad4becc9 100644
--- a/src/audio_core/renderer/splitter/splitter_destinations_data.h
+++ b/src/audio_core/renderer/splitter/splitter_destinations_data.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/src/audio_core/renderer/voice/voice_info.h b/src/audio_core/renderer/voice/voice_info.h
index bc9e550efe..595150f232 100644
--- a/src/audio_core/renderer/voice/voice_info.h
+++ b/src/audio_core/renderer/voice/voice_info.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
diff --git a/src/hid_core/resources/ring_lifo.h b/src/hid_core/resources/ring_lifo.h
index 5dafd7d819..55ba2f0e61 100644
--- a/src/hid_core/resources/ring_lifo.h
+++ b/src/hid_core/resources/ring_lifo.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later