diff --git a/src/vmm_asn.ml b/src/vmm_asn.ml
index 1313e91..6c67020 100644
--- a/src/vmm_asn.ml
+++ b/src/vmm_asn.ml
@@ -1,4 +1,4 @@
-(* (c) 2017 Hannes Mehnert, all rights reserved *)
+(* (c) 2017, 2018 Hannes Mehnert, all rights reserved *)
 
 open Vmm_core
 open Vmm_commands
diff --git a/src/vmm_asn.mli b/src/vmm_asn.mli
index 8fd920d..8dc17e1 100644
--- a/src/vmm_asn.mli
+++ b/src/vmm_asn.mli
@@ -1,4 +1,4 @@
-(* (c) 2017 Hannes Mehnert, all rights reserved *)
+(* (c) 2017, 2018 Hannes Mehnert, all rights reserved *)
 
 open Vmm_core
 
diff --git a/src/vmm_commands.mli b/src/vmm_commands.mli
index 430618a..9d6af05 100644
--- a/src/vmm_commands.mli
+++ b/src/vmm_commands.mli
@@ -1,3 +1,5 @@
+(* (c) 2018 Hannes Mehnert, all rights reserved *)
+
 open Vmm_core
 
 (** The type of versions of the grammar defined below. *)
diff --git a/src/vmm_compress.mli b/src/vmm_compress.mli
index cfceea6..16948cb 100644
--- a/src/vmm_compress.mli
+++ b/src/vmm_compress.mli
@@ -1,2 +1,4 @@
+(* (c) 2018 Hannes Mehnert, all rights reserved *)
+
 val compress : ?level:int -> string -> string
 val uncompress : string -> (string, unit) result
diff --git a/src/vmm_core.mli b/src/vmm_core.mli
index 48c91e5..479c7ef 100644
--- a/src/vmm_core.mli
+++ b/src/vmm_core.mli
@@ -1,3 +1,5 @@
+(* (c) 2018 Hannes Mehnert, all rights reserved *)
+
 val tmpdir : Fpath.t
 val dbdir : Fpath.t
 
diff --git a/src/vmm_lwt.mli b/src/vmm_lwt.mli
index f98809b..ae7445e 100644
--- a/src/vmm_lwt.mli
+++ b/src/vmm_lwt.mli
@@ -1,3 +1,5 @@
+(* (c) 2018 Hannes Mehnert, all rights reserved *)
+
 val pp_sockaddr : Format.formatter -> Lwt_unix.sockaddr -> unit
 
 val pp_process_status : Format.formatter -> Unix.process_status -> unit
diff --git a/src/vmm_tls.ml b/src/vmm_tls.ml
index a7c41df..998cd97 100644
--- a/src/vmm_tls.ml
+++ b/src/vmm_tls.ml
@@ -1,3 +1,5 @@
+(* (c) 2018 Hannes Mehnert, all rights reserved *)
+
 open Rresult.R.Infix
 
 open Vmm_core
diff --git a/src/vmm_tls.mli b/src/vmm_tls.mli
index 8880c37..ebb5e2f 100644
--- a/src/vmm_tls.mli
+++ b/src/vmm_tls.mli
@@ -1,3 +1,4 @@
+(* (c) 2018 Hannes Mehnert, all rights reserved *)
 
 val handle :
   'a -> Vmm_commands.version ->
diff --git a/src/vmm_tls_lwt.mli b/src/vmm_tls_lwt.mli
index b72e093..39886d6 100644
--- a/src/vmm_tls_lwt.mli
+++ b/src/vmm_tls_lwt.mli
@@ -1,3 +1,5 @@
+(* (c) 2017, 2018 Hannes Mehnert, all rights reserved *)
+
 val read_tls : Tls_lwt.Unix.t ->
   (Vmm_commands.wire, [> `Eof | `Exception | `Toomuch ]) result Lwt.t
 
diff --git a/src/vmm_trie.ml b/src/vmm_trie.ml
index ae1559b..9185fb7 100644
--- a/src/vmm_trie.ml
+++ b/src/vmm_trie.ml
@@ -1,3 +1,5 @@
+(* (c) 2018 Hannes Mehnert, all rights reserved *)
+
 open Astring
 
 type 'a t = N of 'a option * 'a t String.Map.t
diff --git a/src/vmm_trie.mli b/src/vmm_trie.mli
index 2564df1..d0ff91b 100644
--- a/src/vmm_trie.mli
+++ b/src/vmm_trie.mli
@@ -1,3 +1,5 @@
+(* (c) 2018 Hannes Mehnert, all rights reserved *)
+
 open Vmm_core
 
 type 'a t
diff --git a/src/vmm_vmmd.mli b/src/vmm_vmmd.mli
index 3f4fd2f..867bd3e 100644
--- a/src/vmm_vmmd.mli
+++ b/src/vmm_vmmd.mli
@@ -1,3 +1,4 @@
+(* (c) 2017, 2018 Hannes Mehnert, all rights reserved *)
 
 type 'a t