diff --git a/app/boards/shields/dactyl_manuform/Kconfig.defconfig b/app/boards/shields/dactyl_manuform/Kconfig.defconfig
index 5a25948d..989b807e 100644
--- a/app/boards/shields/dactyl_manuform/Kconfig.defconfig
+++ b/app/boards/shields/dactyl_manuform/Kconfig.defconfig
@@ -1,4 +1,4 @@
-# Copyright (c) 2020 The ZMK Contributors
+# Copyright (c) 2020-2021 The ZMK Contributors
 # SPDX-License-Identifier: MIT
 
 if SHIELD_DACTYLMANUFORM
diff --git a/app/boards/shields/dactyl_manuform/Kconfig.shield b/app/boards/shields/dactyl_manuform/Kconfig.shield
index 0b1cd03e..cb379c4d 100644
--- a/app/boards/shields/dactyl_manuform/Kconfig.shield
+++ b/app/boards/shields/dactyl_manuform/Kconfig.shield
@@ -1,4 +1,4 @@
-# Copyright (c) 2020 The ZMK Contributors
+# Copyright (c) 2020-2021 The ZMK Contributors
 # SPDX-License-Identifier: MIT
 
 config SHIELD_DACTYLMANUFORM
diff --git a/app/boards/shields/dactyl_manuform/boards/particle_xenon.overlay b/app/boards/shields/dactyl_manuform/boards/particle_xenon.overlay
index 741e836a..ee2caff4 100644
--- a/app/boards/shields/dactyl_manuform/boards/particle_xenon.overlay
+++ b/app/boards/shields/dactyl_manuform/boards/particle_xenon.overlay
@@ -1,10 +1,17 @@
+/*
+ * Copyright (c) 2020-2021 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+// remove duplicated partition from zephyr particle configuration
 /delete-node/ &storage_partition;
 /delete-node/ &boot_partition;
 
 adafriut_flash: &flash0 {
 	/*
 	 * For more information, see:
-	 * http://docs.zephyrproject.org/latest/devices/dts/flash_partitions.html
+	 * https://docs.zephyrproject.org/latest/reference/storage/flash_map/flash_map.html
 	 */
 	partitions {
 		compatible = "fixed-partitions";
diff --git a/app/boards/shields/dactyl_manuform/boards/particle_xenon_deconfig b/app/boards/shields/dactyl_manuform/boards/particle_xenon_deconfig
index 501fe699..97039bbf 100644
--- a/app/boards/shields/dactyl_manuform/boards/particle_xenon_deconfig
+++ b/app/boards/shields/dactyl_manuform/boards/particle_xenon_deconfig
@@ -1,3 +1,4 @@
+# Copyright (c) 2020-2021 The ZMK Contributors
 # SPDX-License-Identifier: MIT
 
 # Enable MPU
diff --git a/app/boards/shields/dactyl_manuform/dactyl_manuform.keymap b/app/boards/shields/dactyl_manuform/dactyl_manuform.keymap
index f50206a6..c15ab045 100644
--- a/app/boards/shields/dactyl_manuform/dactyl_manuform.keymap
+++ b/app/boards/shields/dactyl_manuform/dactyl_manuform.keymap
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020 The ZMK Contributors
+ * Copyright (c) 2020-2021 The ZMK Contributors
  *
  * SPDX-License-Identifier: MIT
  */
diff --git a/app/boards/shields/dactyl_manuform/dactyl_manuform.overlay b/app/boards/shields/dactyl_manuform/dactyl_manuform.overlay
index 21347508..e37dd279 100644
--- a/app/boards/shields/dactyl_manuform/dactyl_manuform.overlay
+++ b/app/boards/shields/dactyl_manuform/dactyl_manuform.overlay
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020 Bartosz Nowak
+ * Copyright (c) 2020-2021 The ZMK Contributors
  *
  * SPDX-License-Identifier: MIT
  */