diff --git a/LICENSE.txt b/LICENSE.txt
old mode 100644
new mode 100755
diff --git a/README.md b/README.md
old mode 100644
new mode 100755
index 70af4c6..db2a352
--- a/README.md
+++ b/README.md
@@ -2,10 +2,11 @@
 ![Mobs Balrog's screenshot](screenshot.png)  
 **_Adds balrogs._**
 
-**Source code's license:** LGPL v2.1  
-**Media (Textures, Models, Sounds) license:** CC-BY-SA 3.0 Unported
+**Version:** 0.4.0
+**Source code's license:** [LGPL v2.1][1]  
+**Media (Textures, Models, Sounds) license:** [CC-BY-SA 3.0 Unported][2]
 
-**Dependencies:** default, tnt (found in Minetest Game), mobs (Mobs Redo)  
+**Dependencies:** default, tnt (found in [Minetest Game][3]), mobs ([Mobs Redo][4])  
 
 
 ### Installation
@@ -21,3 +22,9 @@ GNU+Linux - If you use a system-wide installation place it in
 
 For further information or help see:  
 https://wiki.minetest.net/Help:Installing_Mods
+
+
+[1]: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
+[2]: https://creativecommons.org/licenses/by-sa/3.0/
+[3]: https://github.com/minetest/minetest_game
+[4]: https://forum.minetest.net/viewtopic.php?t=9917
diff --git a/changelog.md b/changelog.md
old mode 100644
new mode 100755
index 85aec1e..a1c54ea
--- a/changelog.md
+++ b/changelog.md
@@ -10,6 +10,22 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
 	- No further addition planned.
 
 
+## [0.4.0] - 2019-10-16
+### Added
+
+	- Support for localization.
+
+### Changed
+
+	- mod.conf to follow MT v5.x specifics.
+	- Textures have been optimized (with optipng).
+
+### Removed
+
+	- Support for MT v4.x
+
+
+
 ## [0.3.5] - 2018-08-23
 ### Changed
 
diff --git a/depends.txt b/depends.txt
deleted file mode 100644
index f4aa7e8..0000000
--- a/depends.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-default
-mobs
-tnt
\ No newline at end of file
diff --git a/description.txt b/description.txt
deleted file mode 100644
index 8df5803..0000000
--- a/description.txt
+++ /dev/null
@@ -1 +0,0 @@
-Adds balrogs.
\ No newline at end of file
diff --git a/init.lua b/init.lua
old mode 100644
new mode 100755
index 19e54e2..b074cda
--- a/init.lua
+++ b/init.lua
@@ -1,7 +1,7 @@
 --[[
 
    Mobs Balrog - Adds balrogs.
-	Copyright © 2018 Hamlet <hamlatmesehub@riseup.net>
+	Copyright © 2018-2019 Hamlet <hamlatmesehub@riseup.net>
 
    Authors of source code:
    -----------------------
@@ -39,6 +39,11 @@
 ]]--
 
 
+-- Used for localization
+
+local S = minetest.get_translator("mobs_balrog")
+
+
 --
 -- Balrog's spawn settings
 --
@@ -215,7 +220,7 @@ mobs:register_mob("mobs_balrog:balrog", {
 --
 
 minetest.register_tool("mobs_balrog:balrog_whip", {
-   description = minetest.colorize("orange", "Balrog Whip") ..
+   description = minetest.colorize("orange", S("Balrog Whip")) ..
       minetest.get_background_escape_sequence("darkred"),
    inventory_image = "mobs_balrog_balrog_whip.png^[transform3",
    on_use = function(itemstack, user, pointed_thing)
@@ -367,5 +372,5 @@ or	(minetest.settings:get("debug_log_level") == "info")
 or (minetest.settings:get("debug_log_level") == "verbose")
 then
 
-	minetest.log("action", "[Mod] Mobs Balrog [v0.3.5] loaded.")
+	minetest.log("action", "[Mod] Mobs Balrog [v0.4.0] loaded.")
 end
diff --git a/locale/mobs_balrog.it.tr b/locale/mobs_balrog.it.tr
new file mode 100644
index 0000000..59a8c56
--- /dev/null
+++ b/locale/mobs_balrog.it.tr
@@ -0,0 +1,3 @@
+# textdomain:mobs_balrog
+
+Balrog Whip=Frusta del balrog
diff --git a/locale/template.txt b/locale/template.txt
new file mode 100644
index 0000000..7ad7096
--- /dev/null
+++ b/locale/template.txt
@@ -0,0 +1,3 @@
+# textdomain:mobs_balrog
+
+Balrog Whip=
diff --git a/mod.conf b/mod.conf
old mode 100644
new mode 100755
index 014138e..91aa4a4
--- a/mod.conf
+++ b/mod.conf
@@ -1,7 +1,3 @@
 name = mobs_balrog
-title = Mobs Balrog
-author = Hamlet
 description = Adds balrogs.
-license = LGPLv2.1 - CC BY-SA 3.0 Unported
-forum = https://forum.minetest.net/viewtopic.php?f=9&t=18459
-version = 0.3.5
\ No newline at end of file
+depends = default, mobs, tnt
diff --git a/models/LICENSE.txt b/models/LICENSE.txt
old mode 100644
new mode 100755
diff --git a/models/mobs_balrog.b3d b/models/mobs_balrog.b3d
old mode 100644
new mode 100755
diff --git a/screenshot.png b/screenshot.png
index 187140a..b157288 100644
Binary files a/screenshot.png and b/screenshot.png differ
diff --git a/settingtypes.txt b/settingtypes.txt
old mode 100644
new mode 100755
diff --git a/sounds/LICENSE.txt b/sounds/LICENSE.txt
old mode 100644
new mode 100755
diff --git a/sounds/mobs_balrog_howl.ogg b/sounds/mobs_balrog_howl.ogg
old mode 100644
new mode 100755
diff --git a/sounds/mobs_balrog_stone_death.ogg b/sounds/mobs_balrog_stone_death.ogg
old mode 100644
new mode 100755
diff --git a/textures/LICENSE.txt b/textures/LICENSE.txt
old mode 100644
new mode 100755
diff --git a/textures/mobs_balrog_balrog.png b/textures/mobs_balrog_balrog.png
index 7ed15da..7d8a81a 100644
Binary files a/textures/mobs_balrog_balrog.png and b/textures/mobs_balrog_balrog.png differ
diff --git a/textures/mobs_balrog_balrog_whip.png b/textures/mobs_balrog_balrog_whip.png
index 407b433..6ede89c 100644
Binary files a/textures/mobs_balrog_balrog_whip.png and b/textures/mobs_balrog_balrog_whip.png differ