diff --git a/03_uart1/src/uart.rs b/03_uart1/src/uart.rs
index bb4ae5d7..bca57093 100644
--- a/03_uart1/src/uart.rs
+++ b/03_uart1/src/uart.rs
@@ -1,7 +1,7 @@
 /*
  * MIT License
  *
- * Copyright (c) 2018 Andre Richter <andre.o.richter@gmail.com>
+ * Copyright (c) 2018-2019 Andre Richter <andre.o.richter@gmail.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
diff --git a/04_mailboxes/src/uart.rs b/04_mailboxes/src/uart.rs
index 67789378..42ff4e43 100644
--- a/04_mailboxes/src/uart.rs
+++ b/04_mailboxes/src/uart.rs
@@ -1,7 +1,7 @@
 /*
  * MIT License
  *
- * Copyright (c) 2018 Andre Richter <andre.o.richter@gmail.com>
+ * Copyright (c) 2018-2019 Andre Richter <andre.o.richter@gmail.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal