diff --git a/.vscode/settings.json b/.vscode/settings.json
index 6996136..0b936ca 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,6 +1,6 @@
 {
-    "datapack.env.cmdVersion": "1.20.2",
-    "datapack.env.dataVersion": "1.20.2",
+    "datapack.env.cmdVersion": "1.20.3",
+    "datapack.env.dataVersion": "1.20.4",
     "datapack.env.defaultVisibility": "public",
     "datapack.env.dependsOnVanilla": true,
     "datapack.env.detectionDepth": 1,
diff --git a/data/ashen_lib/functions/load_once.mcfunction b/data/ashen_lib/functions/load_once.mcfunction
index 146e121..bb4445a 100644
--- a/data/ashen_lib/functions/load_once.mcfunction
+++ b/data/ashen_lib/functions/load_once.mcfunction
@@ -5,7 +5,7 @@
 # @within function ashen_lib:load
 
 # Version tag
-    data modify storage global Ashen.Lib.Version set value "v0.3.1"
+    data modify storage global Ashen.Lib.Version set value "v0.4.0"
 
 # Reset
     scoreboard objectives remove Ashen.Lib.FirstJoin
diff --git a/data/ashen_lib/functions/migration/.mcfunction b/data/ashen_lib/functions/migration/.mcfunction
index 612e89f..6d0ff38 100644
--- a/data/ashen_lib/functions/migration/.mcfunction
+++ b/data/ashen_lib/functions/migration/.mcfunction
@@ -13,3 +13,5 @@ execute if data storage global Ashen.Lib{Version: "v0.1.1"} run function ashen_l
 
 execute if data storage global Ashen.Lib{Version: "v0.2.0"} run function ashen_lib:migration/v0.3.0/
 execute if data storage global Ashen.Lib{Version: "v0.3.0"} run function ashen_lib:migration/v0.3.1/
+
+execute if data storage global Ashen.Lib{Version: "v0.3.1"} run function ashen_lib:migration/v0.4.0/
diff --git a/data/ashen_lib/functions/migration/v0.3.1/.mcfunction b/data/ashen_lib/functions/migration/v0.3.1/.mcfunction
index 8ef0ba9..bf93100 100644
--- a/data/ashen_lib/functions/migration/v0.3.1/.mcfunction
+++ b/data/ashen_lib/functions/migration/v0.3.1/.mcfunction
@@ -6,4 +6,3 @@
 
 # Migration
     data modify storage global Ashen.Lib.Version set value "v0.3.1"
-    
\ No newline at end of file
diff --git a/data/ashen_lib/functions/migration/v0.4.0/.mcfunction b/data/ashen_lib/functions/migration/v0.4.0/.mcfunction
new file mode 100644
index 0000000..387ca07
--- /dev/null
+++ b/data/ashen_lib/functions/migration/v0.4.0/.mcfunction
@@ -0,0 +1,8 @@
+#> ashen_lib:migration/v0.4.0/
+#
+# v0.3.1 -> v0.4.0
+#
+# @within function ashen_lib:migration/
+
+# Migration
+    data modify storage global Ashen.Lib.Version set value "v0.4.0"
diff --git a/pack.mcmeta b/pack.mcmeta
index 06700b7..a037567 100644
--- a/pack.mcmeta
+++ b/pack.mcmeta
@@ -1,10 +1,6 @@
 {
     "pack": {
-        "pack_format": 18,
-        "supported_formats": {
-            "min_inclusive": 18,
-            "max_inclusive": 18
-        },
-        "description": "Prerequisite Library"
+        "pack_format": 26,
+        "description": "Prerequisite Library by haiiro2gou"
     }
 }
\ No newline at end of file