diff --git a/cffi-unistd.asd b/cffi-unistd.asd
index f7fd0b0..5f84b16 100644
--- a/cffi-unistd.asd
+++ b/cffi-unistd.asd
@@ -1,7 +1,7 @@
;;
;; cffi-unistd - Common Lisp wrapper for unistd.h
;;
-;; Copyright 2017 Thomas de Grivel <thoxdg@gmail.com>
+;; Copyright 2017,2018 Thomas de Grivel <thoxdg@gmail.com>
;;
;; Permission to use, copy, modify, and distribute this software for any
;; purpose with or without fee is hereby granted, provided that the above
diff --git a/cffi-unistd.lisp b/cffi-unistd.lisp
index ec4ea41..9c51e3d 100644
--- a/cffi-unistd.lisp
+++ b/cffi-unistd.lisp
@@ -1,7 +1,7 @@
;;
;; cffi-unistd - Common Lisp wrapper for unistd.h
;;
-;; Copyright 2017 Thomas de Grivel <thoxdg@gmail.com>
+;; Copyright 2017,2018 Thomas de Grivel <thoxdg@gmail.com>
;;
;; Permission to use, copy, modify, and distribute this software for any
;; purpose with or without fee is hereby granted, provided that the above
diff --git a/grovel-unistd.lisp b/grovel-unistd.lisp
index 1a11d49..fcecb0b 100644
--- a/grovel-unistd.lisp
+++ b/grovel-unistd.lisp
@@ -1,7 +1,7 @@
;;
;; cffi-unistd - Common Lisp wrapper for unistd.h
;;
-;; Copyright 2017 Thomas de Grivel <thoxdg@gmail.com>
+;; Copyright 2017,2018 Thomas de Grivel <thoxdg@gmail.com>
;;
;; Permission to use, copy, modify, and distribute this software for any
;; purpose with or without fee is hereby granted, provided that the above
diff --git a/package.lisp b/package.lisp
index 1d921bf..163af52 100644
--- a/package.lisp
+++ b/package.lisp
@@ -1,7 +1,7 @@
;;
;; cffi-unistd - Common Lisp wrapper for unistd.h
;;
-;; Copyright 2017 Thomas de Grivel <thoxdg@gmail.com>
+;; Copyright 2017,2018 Thomas de Grivel <thoxdg@gmail.com>
;;
;; Permission to use, copy, modify, and distribute this software for any
;; purpose with or without fee is hereby granted, provided that the above