diff --git a/COPYRIGHT b/COPYRIGHT
index 248bc81..fa28b72 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -1,4 +1,4 @@
-Copyright (c) 2012-2016 Grzegorz Blach. All rights reserved.
+Copyright (c) 2012-2018 Grzegorz Blach. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
diff --git a/please.c b/please.c
index 5ecae2b..ca87b94 100644
--- a/please.c
+++ b/please.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012-2016 Grzegorz Blach. All rights reserved.
+ * Copyright (c) 2012-2018 Grzegorz Blach. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions