diff --git a/LICENSE.md b/LICENSE.md
index a5a3df9..2a044ae 100644
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,6 +1,6 @@
 # zlib license
 
-Copyright © 2012-2019 Hugo Locurcio and contributors
+Copyright © 2012-2020 Hugo Locurcio and contributors
 
 **This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.**
 
diff --git a/README.md b/README.md
index d639688..055d6bc 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@ versions than 5.0.0 will generally not be fixed.
 
 ## License
 
-Copyright © 2012-2019 Hugo Locurcio and contributors
+Copyright © 2012-2020 Hugo Locurcio and contributors
 
 - Map Tools code is licensed under the zlib license, see
   [`LICENSE.md`](LICENSE.md) for details.
diff --git a/aliases.lua b/aliases.lua
index 13ec59f..ca3e832 100644
--- a/aliases.lua
+++ b/aliases.lua
@@ -1,7 +1,7 @@
 --[[
 Map Tools: alias definitions
 
-Copyright © 2012-2019 Hugo Locurcio and contributors.
+Copyright © 2012-2020 Hugo Locurcio and contributors.
 Licensed under the zlib license. See LICENSE.md for more information.
 --]]
 
diff --git a/config.lua b/config.lua
index 466491e..b980fc3 100644
--- a/config.lua
+++ b/config.lua
@@ -1,7 +1,7 @@
 --[[
 Map Tools: configuration handling
 
-Copyright © 2012-2019 Hugo Locurcio and contributors.
+Copyright © 2012-2020 Hugo Locurcio and contributors.
 Licensed under the zlib license. See LICENSE.md for more information.
 --]]
 
diff --git a/craftitems.lua b/craftitems.lua
index 00f09f2..58127bf 100644
--- a/craftitems.lua
+++ b/craftitems.lua
@@ -1,7 +1,7 @@
 --[[
 Map Tools: item definitions
 
-Copyright © 2012-2019 Hugo Locurcio and contributors.
+Copyright © 2012-2020 Hugo Locurcio and contributors.
 Licensed under the zlib license. See LICENSE.md for more information.
 --]]
 
diff --git a/default_nodes.lua b/default_nodes.lua
index 15ce925..8a59a68 100644
--- a/default_nodes.lua
+++ b/default_nodes.lua
@@ -1,7 +1,7 @@
 --[[
 Map Tools: unbreakable default nodes
 
-Copyright © 2012-2019 Hugo Locurcio and contributors.
+Copyright © 2012-2020 Hugo Locurcio and contributors.
 Licensed under the zlib license. See LICENSE.md for more information.
 --]]
 
diff --git a/init.lua b/init.lua
index 4c969bf..7e053ec 100644
--- a/init.lua
+++ b/init.lua
@@ -3,7 +3,7 @@
 ** Map Tools **
 By Calinou.
 
-Copyright © 2012-2019 Hugo Locurcio and contributors.
+Copyright © 2012-2020 Hugo Locurcio and contributors.
 Licensed under the zlib license. See LICENSE.md for more information.
 =====================================================================
 --]]
diff --git a/nodes.lua b/nodes.lua
index 08aa914..2f9d809 100644
--- a/nodes.lua
+++ b/nodes.lua
@@ -1,7 +1,7 @@
 --[[
 Map Tools: node definitions
 
-Copyright © 2012-2019 Hugo Locurcio and contributors.
+Copyright © 2012-2020 Hugo Locurcio and contributors.
 Licensed under the zlib license. See LICENSE.md for more information.
 --]]
 
diff --git a/tools.lua b/tools.lua
index 550ab6b..6fe0456 100644
--- a/tools.lua
+++ b/tools.lua
@@ -1,7 +1,7 @@
 --[[
 Map Tools: tool definitions
 
-Copyright © 2012-2019 Hugo Locurcio and contributors.
+Copyright © 2012-2020 Hugo Locurcio and contributors.
 Licensed under the zlib license. See LICENSE.md for more information.
 --]]