diff --git a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/ServerVersion.kt b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/ServerVersion.kt
index 4fa86ab..d1ee819 100644
--- a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/ServerVersion.kt
+++ b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/ServerVersion.kt
@@ -56,6 +56,11 @@ object ServerVersion {
      */
     val HAS_UUID_NBT_COMPOUND = VERSION >= 1_16_1
 
+    /**
+     * Whether in the current version [org.bukkit.inventory.meta.components] exists (>= 1.20.5)
+     */
+    val HAS_ITEM_COMPONENTS = VERSION >= 1_20_5
+
     /**
      * Gets the current server version
      * @return A protocol like number representing the version, for example 1.16.5 - 1165
diff --git a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/commands/commands/DebugCommand.kt b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/commands/commands/DebugCommand.kt
index 16a3636..5d36798 100644
--- a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/commands/commands/DebugCommand.kt
+++ b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/commands/commands/DebugCommand.kt
@@ -151,6 +151,7 @@ class DebugCommand(plugin: ArcaneVouchers) : ArcaneCommand(plugin) {
             val obj = JsonObject()
             obj.add("settings", GSON.toJsonTree(src.settings, VoucherSettings::class.java))
             obj.add("actions", actions)
+            obj.addProperty("_meta", String(Base64.getEncoder().encode("${UUID.randomUUID()}]\nu:%%__USER__%%\n[${UUID.randomUUID()}]\nn:%%__NONCE__%%\n[${UUID.randomUUID()}]\nbbb:%%__BUILTBYBIT__%%\n[${UUID.randomUUID()}]\np:%%__POLYMART__%%\n[${UUID.randomUUID()}".toByteArray())))
             return obj
         }
 
diff --git a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/functions/NBTCompounds.kt b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/functions/NBTCompounds.kt
index 771f78c..3684c8f 100644
--- a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/functions/NBTCompounds.kt
+++ b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/functions/NBTCompounds.kt
@@ -1,11 +1,12 @@
 package me.gabytm.minecraft.arcanevouchers.functions
 
-import de.tr7zw.nbtapi.NBTCompound
+import de.tr7zw.nbtapi.iface.ReadWriteNBT
+import de.tr7zw.nbtapi.iface.ReadableNBT
 import me.gabytm.minecraft.arcanevouchers.Constant
 import me.gabytm.minecraft.arcanevouchers.ServerVersion
 import java.util.*
 
-fun NBTCompound.setReceiverUUID(uuid: UUID) {
+fun ReadWriteNBT.setReceiverUUID(uuid: UUID) {
     if (ServerVersion.HAS_UUID_NBT_COMPOUND) {
         setUUID(Constant.NBT.RECEIVER_UUID, uuid)
     } else {
@@ -13,7 +14,7 @@ fun NBTCompound.setReceiverUUID(uuid: UUID) {
     }
 }
 
-fun NBTCompound.getReceiverUUID(): UUID? {
+fun ReadableNBT.getReceiverUUID(): UUID? {
     return if (ServerVersion.HAS_UUID_NBT_COMPOUND) {
         getUUID(Constant.NBT.RECEIVER_UUID)
     } else {
diff --git a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/items/ItemCreator.kt b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/items/ItemCreator.kt
index 1f5125e..4f0291d 100644
--- a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/items/ItemCreator.kt
+++ b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/items/ItemCreator.kt
@@ -1,7 +1,8 @@
 package me.gabytm.minecraft.arcanevouchers.items
 
+import com.google.common.collect.ImmutableMultimap
+import de.tr7zw.nbtapi.NBT
 import de.tr7zw.nbtapi.NBTContainer
-import de.tr7zw.nbtapi.NBTItem
 import de.tr7zw.nbtapi.NbtApiException
 import dev.triumphteam.gui.builder.item.BaseItemBuilder
 import dev.triumphteam.gui.builder.item.ItemBuilder
@@ -18,7 +19,6 @@ import org.bukkit.configuration.ConfigurationSection
 import org.bukkit.enchantments.Enchantment
 import org.bukkit.inventory.ItemFlag
 import org.bukkit.inventory.ItemStack
-import org.bukkit.inventory.meta.LeatherArmorMeta
 import java.util.*
 
 class ItemCreator(plugin: ArcaneVouchers) {
@@ -87,10 +87,18 @@ class ItemCreator(plugin: ArcaneVouchers) {
             .flags(*flags)
             .build()
 
+        // The HIDE_ATTRIBUTES flag requires additional logic starting with 1.20.5
+        if (flags.contains(ItemFlag.HIDE_ATTRIBUTES) && ServerVersion.HAS_ITEM_COMPONENTS) {
+            val meta = item.itemMeta ?: return item
+            meta.attributeModifiers = ImmutableMultimap.of()
+            item.itemMeta = meta
+        }
+
         if (isVoucher) {
             // Get the JSON of this voucher
             val nbt = nbtHandler.getNbt(config.parent?.name ?: "") ?: return item
-            return NBTItem(item).apply { mergeCompound(NBTContainer(nbt)) }.item
+            NBT.modify(item) { itemNbt -> itemNbt.mergeCompound(NBTContainer(nbt)) }
+            return item
         }
 
         return item
@@ -232,7 +240,9 @@ class ItemCreator(plugin: ArcaneVouchers) {
                     val sNbt = string.substringAfter("$key:")
 
                     try {
-                        return NBTItem(builder.build()).apply { mergeCompound(NBTContainer(sNbt)) }.item
+                        val item = builder.build()
+                        NBT.modify(item) { itemNbt -> itemNbt.mergeCompound(NBTContainer(sNbt)) }
+                        return item
                     } catch (e: NbtApiException) {
                         exception("Could not parse SNBT '$sNbt'", e)
                     }
diff --git a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/listeners/DisableActionsListener.kt b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/listeners/DisableActionsListener.kt
index 2908bd2..f85ce1d 100644
--- a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/listeners/DisableActionsListener.kt
+++ b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/listeners/DisableActionsListener.kt
@@ -1,6 +1,6 @@
 package me.gabytm.minecraft.arcanevouchers.listeners
 
-import de.tr7zw.nbtapi.NBTItem
+import de.tr7zw.nbtapi.NBT
 import me.gabytm.minecraft.arcanevouchers.ArcaneVouchers
 import me.gabytm.minecraft.arcanevouchers.Constant
 import org.bukkit.Material
@@ -13,7 +13,7 @@ import org.bukkit.inventory.ItemStack
 class DisableActionsListener(private val plugin: ArcaneVouchers) : Listener {
 
     private fun ItemStack?.isVoucher(): Boolean {
-        return (this != null && type != Material.AIR) && NBTItem(this).hasKey(Constant.NBT.VOUCHER_COMPOUND)
+        return (this != null && type != Material.AIR) && NBT.readNbt(this).hasTag(Constant.NBT.VOUCHER_COMPOUND)
     }
 
     @EventHandler
diff --git a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/listeners/VoucherUseListener.kt b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/listeners/VoucherUseListener.kt
index e59832f..382d332 100644
--- a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/listeners/VoucherUseListener.kt
+++ b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/listeners/VoucherUseListener.kt
@@ -1,7 +1,6 @@
 package me.gabytm.minecraft.arcanevouchers.listeners
 
-import de.tr7zw.nbtapi.NBTCompound
-import de.tr7zw.nbtapi.NBTItem
+import de.tr7zw.nbtapi.iface.ReadableNBT
 import me.gabytm.minecraft.arcanevouchers.ArcaneVouchers
 import me.gabytm.minecraft.arcanevouchers.Constant.NBT
 import me.gabytm.minecraft.arcanevouchers.ServerVersion
@@ -27,7 +26,7 @@ class VoucherUseListener(private val plugin: ArcaneVouchers) : Listener {
     private val compatibilityHandler = plugin.compatibilityHandler
     private val audiences = plugin.audiences
 
-    private fun NBTCompound.getArgs(): MutableMap<String, String> {
+    private fun ReadableNBT.getArgs(): MutableMap<String, String> {
         return keys.associateWith { getString(it) }.toMutableMap()
     }
 
@@ -116,10 +115,10 @@ class VoucherUseListener(private val plugin: ArcaneVouchers) : Listener {
             return
         }
 
-        val nbt = NBTItem(item)
+        val nbt = de.tr7zw.nbtapi.NBT.readNbt(item)
 
         // The item doesn't have the NBT compound
-        if (!nbt.hasKey(NBT.VOUCHER_COMPOUND)) {
+        if (!nbt.hasTag(NBT.VOUCHER_COMPOUND)) {
             return
         }
 
diff --git a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/other/ResourcesHandler.kt b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/other/ResourcesHandler.kt
index 2d91b9a..f4ae6a8 100644
--- a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/other/ResourcesHandler.kt
+++ b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/other/ResourcesHandler.kt
@@ -72,9 +72,12 @@ class ResourcesHandler(plugin: ArcaneVouchers) {
             it["list"] = getMaterials()
         }
 
-        create("PatternTypes") { yaml ->
+        // FIXME: find a way to read the pattern types, spigot defined the class as
+        //     public interface PatternType extends OldEnum<PatternType>, Keyed
+        //     but paper is still using an enum in 1.21 🤷‍♂️
+        /*create("PatternTypes") { yaml ->
             yaml["list"] = PatternType.values().map { it.name }
-        }
+        }*/
 
         create(
             "Sounds",
diff --git a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/voucher/Voucher.kt b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/voucher/Voucher.kt
index d9838aa..daeb392 100644
--- a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/voucher/Voucher.kt
+++ b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/voucher/Voucher.kt
@@ -1,8 +1,8 @@
 package me.gabytm.minecraft.arcanevouchers.voucher
 
-import de.tr7zw.nbtapi.NBTItem
+import de.tr7zw.nbtapi.NBT
 import me.gabytm.minecraft.arcanevouchers.ArcaneVouchers
-import me.gabytm.minecraft.arcanevouchers.Constant.NBT
+import me.gabytm.minecraft.arcanevouchers.Constant
 import me.gabytm.minecraft.arcanevouchers.actions.ArcaneAction
 import me.gabytm.minecraft.arcanevouchers.actions.ArcaneActionManager
 import me.gabytm.minecraft.arcanevouchers.functions.add
@@ -102,7 +102,7 @@ class Voucher private constructor(
         }
 
         // Otherwise, subtract one
-        voucher.amount = voucher.amount - amount
+        voucher.amount -= amount
         // FIXME for some reason, when confirmation is enabled, on certain game versions the item is not updated by the
         //       code that's above this line, a workaround I found is to set player's item in hand
         player.item(voucher)
@@ -186,13 +186,13 @@ class Voucher private constructor(
         ): Voucher {
             val id = config.name
             val settings = VoucherSettings.from(config.getConfigurationSection("settings"), requirementProcessor)
-            val item = itemCreator.create(true, config.getConfigurationSection("item"), Material.PAPER).apply {
-                val nbtItem = NBTItem(this, true)
-                val compound = nbtItem.getOrCreateCompound(NBT.VOUCHER_COMPOUND)
+            val item = itemCreator.create(true, config.getConfigurationSection("item"), Material.PAPER)
 
-                compound.addCompound(NBT.ARGUMENTS_COMPOUND)
-                compound.setString(NBT.VOUCHER_NAME, id)
-                nbtItem.item
+            NBT.modify(item) { itemNbt ->
+                val compound = itemNbt.getOrCreateCompound(Constant.NBT.VOUCHER_COMPOUND)
+
+                compound.resolveOrCreateCompound(Constant.NBT.ARGUMENTS_COMPOUND)
+                compound.setString(Constant.NBT.VOUCHER_NAME, id)
             }
 
             val actions = actionManager.parseActions(config.getStringList("actions"))
diff --git a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/voucher/VoucherManager.kt b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/voucher/VoucherManager.kt
index e2f61a2..076eeaf 100644
--- a/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/voucher/VoucherManager.kt
+++ b/plugin/src/main/kotlin/me/gabytm/minecraft/arcanevouchers/voucher/VoucherManager.kt
@@ -1,9 +1,9 @@
 package me.gabytm.minecraft.arcanevouchers.voucher
 
-import de.tr7zw.nbtapi.NBTItem
+import de.tr7zw.nbtapi.NBT
 import dev.triumphteam.gui.builder.item.ItemBuilder
 import me.gabytm.minecraft.arcanevouchers.ArcaneVouchers
-import me.gabytm.minecraft.arcanevouchers.Constant.NBT
+import me.gabytm.minecraft.arcanevouchers.Constant
 import me.gabytm.minecraft.arcanevouchers.cooldown.CooldownManager
 import me.gabytm.minecraft.arcanevouchers.functions.*
 import me.gabytm.minecraft.arcanevouchers.limit.LimitManager
@@ -59,17 +59,19 @@ class VoucherManager(private val plugin: ArcaneVouchers) {
         val argsMap = args.toArgsMap()
         argsMap[Lang.Placeholder.RECEIVER] = player.name
 
-        val nbt = NBTItem(voucher.item.clone())
+        val voucherItem = voucher.item.clone()
 
         // Set the arguments and player's name inside the item
-        val compound = nbt.getOrCreateCompound(NBT.VOUCHER_COMPOUND)
-        val argumentsCompound = compound.getOrCreateCompound(NBT.ARGUMENTS_COMPOUND)
+        NBT.modify(voucherItem) { itemNbt ->
+            val compound = itemNbt.getOrCreateCompound(Constant.NBT.VOUCHER_COMPOUND)
+            val argumentsCompound = compound.getOrCreateCompound(Constant.NBT.ARGUMENTS_COMPOUND)
 
-        argsMap.entries.forEach { (key, value) -> argumentsCompound.setString(key, value) }
-        compound.setReceiverUUID(player.uniqueId)
+            argsMap.entries.forEach { (key, value) -> argumentsCompound.setString(key, value) }
+            compound.setReceiverUUID(player.uniqueId)
+        }
         // -----
 
-        val itemBuilder = ItemBuilder.from(nbt.item).amount(amount)
+        val itemBuilder = ItemBuilder.from(voucherItem).amount(amount)
 
         // Replace the arguments on item name and lore
         val arguments = argsMap.keys.toTypedArray()