diff --git a/app/dts/bindings/behaviors/zmk,behavior-input-two-axis.yaml b/app/dts/bindings/behaviors/zmk,behavior-input-two-axis.yaml
index 0c138e03929..80972212ce0 100644
--- a/app/dts/bindings/behaviors/zmk,behavior-input-two-axis.yaml
+++ b/app/dts/bindings/behaviors/zmk,behavior-input-two-axis.yaml
@@ -1,3 +1,6 @@
+# Copyright (c) 2024 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
 description: Two axis input behavior
 
 compatible: "zmk,behavior-input-two-axis"
diff --git a/app/dts/bindings/zmk,input-listener.yaml b/app/dts/bindings/zmk,input-listener.yaml
index 0267b9503a9..877d7d8b78d 100644
--- a/app/dts/bindings/zmk,input-listener.yaml
+++ b/app/dts/bindings/zmk,input-listener.yaml
@@ -1,3 +1,6 @@
+# Copyright (c) 2024 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
 description: |
   Listener to subscribe to input events and send HID updates after processing
 
diff --git a/app/dts/bindings/zmk,input-split.yaml b/app/dts/bindings/zmk,input-split.yaml
index bc2ca26f804..76d15a36753 100644
--- a/app/dts/bindings/zmk,input-split.yaml
+++ b/app/dts/bindings/zmk,input-split.yaml
@@ -1,3 +1,6 @@
+# Copyright (c) 2024 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
 include: [base.yaml]
 
 compatible: "zmk,input-split"
diff --git a/app/dts/input/processors.dtsi b/app/dts/input/processors.dtsi
index 48590701ab1..d072c0fcfcf 100644
--- a/app/dts/input/processors.dtsi
+++ b/app/dts/input/processors.dtsi
@@ -1,3 +1,8 @@
+/*
+ * Copyright (c) 2024 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
 
 #include <input/processors/scaler.dtsi>
 #include <input/processors/code_mapper.dtsi>
diff --git a/app/dts/input/processors/code_mapper.dtsi b/app/dts/input/processors/code_mapper.dtsi
index ba22bb1b661..6a9b5d164ed 100644
--- a/app/dts/input/processors/code_mapper.dtsi
+++ b/app/dts/input/processors/code_mapper.dtsi
@@ -1,3 +1,8 @@
+/*
+ * Copyright (c) 2024 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
 
 #include <zephyr/dt-bindings/input/input-event-codes.h>
 
diff --git a/app/dts/input/processors/scaler.dtsi b/app/dts/input/processors/scaler.dtsi
index 663e6992b7a..4cd329ac7cc 100644
--- a/app/dts/input/processors/scaler.dtsi
+++ b/app/dts/input/processors/scaler.dtsi
@@ -1,5 +1,10 @@
+/*
+ * Copyright (c) 2024 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
 
-#include <zephyr/dt-bindings/input/input-event-codes.h>
+ #include <zephyr/dt-bindings/input/input-event-codes.h>
 
 / {
     /omit-if-no-ref/ zip_x_scaler: zip_x_scaler {
diff --git a/app/dts/input/processors/temp_layer.dtsi b/app/dts/input/processors/temp_layer.dtsi
index 0067f9e33c3..228ad4beffb 100644
--- a/app/dts/input/processors/temp_layer.dtsi
+++ b/app/dts/input/processors/temp_layer.dtsi
@@ -1,3 +1,8 @@
+/*
+ * Copyright (c) 2024 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
 
 #include <zephyr/dt-bindings/input/input-event-codes.h>
 
diff --git a/app/dts/input/processors/transform.dtsi b/app/dts/input/processors/transform.dtsi
index a8598156f9a..541e47d3304 100644
--- a/app/dts/input/processors/transform.dtsi
+++ b/app/dts/input/processors/transform.dtsi
@@ -1,3 +1,8 @@
+/*
+ * Copyright (c) 2024 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
 
 #include <zephyr/dt-bindings/input/input-event-codes.h>
 
diff --git a/app/include/drivers/input_processor.h b/app/include/drivers/input_processor.h
index fc315e0c9b6..aea57476ae4 100644
--- a/app/include/drivers/input_processor.h
+++ b/app/include/drivers/input_processor.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020 The ZMK Contributors
+ * Copyright (c) 2024 The ZMK Contributors
  *
  * SPDX-License-Identifier: MIT
  */
diff --git a/app/include/dt-bindings/zmk/input_transform.h b/app/include/dt-bindings/zmk/input_transform.h
index 5e883c1359c..f75c6dabefd 100644
--- a/app/include/dt-bindings/zmk/input_transform.h
+++ b/app/include/dt-bindings/zmk/input_transform.h
@@ -1,3 +1,9 @@
+/*
+ * Copyright (c) 2024 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
 #include <zephyr/dt-bindings/dt-util.h>
 
 #define INPUT_TRANSFORM_XY_SWAP BIT(0)
diff --git a/app/src/behaviors/behavior_input_two_axis.c b/app/src/behaviors/behavior_input_two_axis.c
index dd2f3bf69e2..267416b3dcd 100644
--- a/app/src/behaviors/behavior_input_two_axis.c
+++ b/app/src/behaviors/behavior_input_two_axis.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021 The ZMK Contributors
+ * Copyright (c) 2024 The ZMK Contributors
  *
  * SPDX-License-Identifier: MIT
  */
diff --git a/app/src/mouse/CMakeLists.txt b/app/src/mouse/CMakeLists.txt
index f8ddc3f09a2..fdee57c8540 100644
--- a/app/src/mouse/CMakeLists.txt
+++ b/app/src/mouse/CMakeLists.txt
@@ -1,3 +1,5 @@
+# Copyright (c) 2024 The ZMK Contributors
+# SPDX-License-Identifier: MIT
 
 target_sources_ifdef(CONFIG_ZMK_INPUT_LISTENER app PRIVATE input_listener.c)
 target_sources_ifdef(CONFIG_ZMK_INPUT_PROCESSOR_TRANSFORM app PRIVATE input_processor_transform.c)
diff --git a/app/src/mouse/Kconfig b/app/src/mouse/Kconfig
index a3ebff8087a..29695628f1d 100644
--- a/app/src/mouse/Kconfig
+++ b/app/src/mouse/Kconfig
@@ -1,4 +1,4 @@
-# Copyright (c) 2023 The ZMK Contributors
+# Copyright (c) 2024 The ZMK Contributors
 # SPDX-License-Identifier: MIT
 
 config ZMK_MOUSE
diff --git a/app/src/mouse/input_listener.c b/app/src/mouse/input_listener.c
index 5e0dc9c7fb4..ec2b85d81a6 100644
--- a/app/src/mouse/input_listener.c
+++ b/app/src/mouse/input_listener.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020 The ZMK Contributors
+ * Copyright (c) 2024 The ZMK Contributors
  *
  * SPDX-License-Identifier: MIT
  */