diff --git a/build.gradle b/build.gradle
index dcf6cd2..189b2cd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 plugins {
-    id 'fabric-loom' version '0.12-SNAPSHOT'
+    id 'fabric-loom' version '1.7-SNAPSHOT'
     id 'maven-publish'
-    id 'org.jetbrains.kotlin.jvm' version '1.6.0'
+    id 'org.jetbrains.kotlin.jvm' version '2.0.20'
 }
 
 repositories{
@@ -13,9 +13,9 @@ repositories{
     }
 }
 
-def kotlinVersion = "1.6.0"
-sourceCompatibility = JavaVersion.VERSION_17
-targetCompatibility = JavaVersion.VERSION_17
+def kotlinVersion = "2.0.20"
+sourceCompatibility = JavaVersion.VERSION_21
+targetCompatibility = JavaVersion.VERSION_21
 
 archivesBaseName = project.archives_base_name
 version = project.mod_version
@@ -27,7 +27,7 @@ dependencies {
     mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
     modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
 
-    modImplementation "net.fabricmc:fabric-language-kotlin:1.7.0+kotlin.${kotlinVersion}"
+    modImplementation "net.fabricmc:fabric-language-kotlin:1.12.2+kotlin.${kotlinVersion}"
 
     // Fabric API. This is technically optional, but you probably want it anyway.
     modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
@@ -49,7 +49,7 @@ tasks.withType(JavaCompile) {
 }
 
 task sourcesJar(type: Jar, dependsOn: classes) {
-    classifier = "sources"
+    archiveClassifier = "sources"
     from sourceSets.main.allSource
 }
 
diff --git a/gradle.properties b/gradle.properties
index 6c3eeb5..8b19946 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -2,13 +2,13 @@
 org.gradle.jvmargs=-Xmx1G
 # Fabric Properties
 # check these on https://modmuss50.me/fabric.html
-minecraft_version=1.19
-yarn_mappings=1.19+build.4
-loader_version=0.14.8
+minecraft_version=1.21.1
+yarn_mappings=1.21.1+build.3
+loader_version=0.16.5
 # Mod Properties
-mod_version=1.0.6
+mod_version=1.0.6+1.21.1
 maven_group=com.github.quiltservertools
 archives_base_name=wires
 # Dependencies
 # check this on https://fabricmc.net/versions.html
-fabric_version=0.56.3+1.19
\ No newline at end of file
+fabric_version=0.105.0+1.21.1
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 329f10c..0d8ab51 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1 +1 @@
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip
diff --git a/src/main/java/net/quiltservertools/wires/mixins/MixinPlayerManager.java b/src/main/java/net/quiltservertools/wires/mixins/MixinPlayerManager.java
index 2e81e48..12c291c 100644
--- a/src/main/java/net/quiltservertools/wires/mixins/MixinPlayerManager.java
+++ b/src/main/java/net/quiltservertools/wires/mixins/MixinPlayerManager.java
@@ -1,5 +1,6 @@
 package net.quiltservertools.wires.mixins;
 
+import net.minecraft.server.network.ConnectedClientData;
 import net.quiltservertools.wires.command.VanishCommand;
 import com.mojang.authlib.GameProfile;
 import net.minecraft.network.ClientConnection;
@@ -24,8 +25,8 @@ public void checkMaintenanceMode(SocketAddress address, GameProfile profile, Cal
             cir.setReturnValue(Text.literal("Server is closed for maintenance"));
         }
     }
-    @Inject(method = "onPlayerConnect(Lnet/minecraft/network/ClientConnection;Lnet/minecraft/server/network/ServerPlayerEntity;)V", at = @At("RETURN"))
-    public void onPlayerConnect(ClientConnection connection, ServerPlayerEntity entity, CallbackInfo ci) {
-        VanishCommand.INSTANCE.getPlayers().forEach(player -> connection.send(new PlayerListS2CPacket(PlayerListS2CPacket.Action.REMOVE_PLAYER, player)));
+    @Inject(method = "onPlayerConnect", at = @At("RETURN"))
+    public void onPlayerConnect(ClientConnection connection, ServerPlayerEntity entity, ConnectedClientData clientData, CallbackInfo ci) {
+        VanishCommand.INSTANCE.getPlayers().forEach(player -> connection.send(new PlayerListS2CPacket(PlayerListS2CPacket.Action.UPDATE_LISTED, player)));
     }
 }
diff --git a/src/main/java/net/quiltservertools/wires/mixins/MixinServerPlayNetworkHandler.java b/src/main/java/net/quiltservertools/wires/mixins/MixinServerPlayNetworkHandler.java
index d20f303..f1d06d4 100644
--- a/src/main/java/net/quiltservertools/wires/mixins/MixinServerPlayNetworkHandler.java
+++ b/src/main/java/net/quiltservertools/wires/mixins/MixinServerPlayNetworkHandler.java
@@ -1,5 +1,6 @@
 package net.quiltservertools.wires.mixins;
 
+import net.minecraft.network.DisconnectionInfo;
 import net.quiltservertools.wires.StaffChat;
 import net.quiltservertools.wires.command.MuteCommands;
 import net.quiltservertools.wires.command.VanishCommand;
@@ -33,7 +34,7 @@ public abstract class MixinServerPlayNetworkHandler {
     @Inject(method = "onChatMessage(Lnet/minecraft/network/packet/c2s/play/ChatMessageC2SPacket;)V", at = @At("HEAD"), cancellable = true)
     public void interceptChatMessage(ChatMessageC2SPacket packet, CallbackInfo ci) {
         Config config = Config.INSTANCE;
-        String message = packet.getChatMessage();
+        String message = packet.chatMessage();
         if (config.isPlayerMuted(player.getUuid()) && Permissions.INSTANCE.hasPermission(player.getCommandSource(), MuteCommands.name)) {
             player.sendMessage(muted);
             player.sendMessage(Text.literal("Reason: " + (config.getMute(player).isPresent() ? config.getMute(player).get().getReason() : "<None provided>")));
@@ -48,7 +49,7 @@ public void interceptChatMessage(ChatMessageC2SPacket packet, CallbackInfo ci) {
     }
 
     @Inject(method = "onDisconnected", at = @At("HEAD"))
-    public void removeFromVanish(Text reason, CallbackInfo ci) {
+    public void removeFromVanish(DisconnectionInfo info, CallbackInfo ci) {
         VanishCommand.INSTANCE.removePlayer(this.getPlayer());
     }
 }
diff --git a/src/main/java/net/quiltservertools/wires/mixins/MixinServerQueryNetworkHandler.java b/src/main/java/net/quiltservertools/wires/mixins/MixinServerQueryNetworkHandler.java
index d9be005..19c7df8 100644
--- a/src/main/java/net/quiltservertools/wires/mixins/MixinServerQueryNetworkHandler.java
+++ b/src/main/java/net/quiltservertools/wires/mixins/MixinServerQueryNetworkHandler.java
@@ -1,29 +1,36 @@
 package net.quiltservertools.wires.mixins;
 
-import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.ServerMetadata;
 import net.minecraft.server.network.ServerQueryNetworkHandler;
 import net.quiltservertools.wires.config.Config;
+import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Redirect;
 
+import java.util.Optional;
+
 @Mixin(ServerQueryNetworkHandler.class)
 public abstract class MixinServerQueryNetworkHandler {
-    @Redirect(method = "onRequest", at = @At(value = "INVOKE", target = "Lnet/minecraft/server/MinecraftServer;getServerMetadata()Lnet/minecraft/server/ServerMetadata;"))
-    private ServerMetadata showMaintenance(MinecraftServer server) {
-        var realData = server.getServerMetadata();
 
-        if(Config.INSTANCE.isMaintenanceMode()) {
-            var metadata = new ServerMetadata();
-            metadata.setVersion(new ServerMetadata.Version("Maintenance", -1));
-            metadata.setDescription(realData.getDescription());
-            metadata.setFavicon(realData.getFavicon());
-            metadata.setPlayers(realData.getPlayers());
+    @Shadow
+    @Final
+    private ServerMetadata metadata;
 
-            return metadata;
+    @Redirect(method = "onRequest", at = @At(value = "FIELD", target = "Lnet/minecraft/server/network/ServerQueryNetworkHandler;metadata:Lnet/minecraft/server/ServerMetadata;"))
+    private ServerMetadata showMaintenance(ServerQueryNetworkHandler instance) {
+
+        if(Config.INSTANCE.isMaintenanceMode()) {
+            return new ServerMetadata(
+                    metadata.description(),
+                    metadata.players(),
+                    Optional.of(new ServerMetadata.Version("Maintenance", -1)),
+                    metadata.favicon(),
+                    metadata.secureChatEnforced()
+            );
         }
 
-        return realData;
+        return metadata;
     }
 }
diff --git a/src/main/kotlin/net/quiltservertools/wires/command/MaintenanceModeCommand.kt b/src/main/kotlin/net/quiltservertools/wires/command/MaintenanceModeCommand.kt
index 36c469a..498d58f 100644
--- a/src/main/kotlin/net/quiltservertools/wires/command/MaintenanceModeCommand.kt
+++ b/src/main/kotlin/net/quiltservertools/wires/command/MaintenanceModeCommand.kt
@@ -9,6 +9,7 @@ import net.minecraft.text.Text
 import net.minecraft.util.Formatting
 import net.quiltservertools.wires.config.Config
 import net.quiltservertools.wires.util.Permissions.hasPermission
+import java.util.function.Supplier
 
 object MaintenanceModeCommand {
 
@@ -50,7 +51,7 @@ object MaintenanceModeCommand {
             }
         }
         scs.sendFeedback(
-            Text.literal("Maintenance mode ").append(Text.literal(if (state) "enabled" else "disabled").formatted(if (state) Formatting.RED else Formatting.GREEN)),
+            { Text.literal("Maintenance mode ").append(Text.literal(if (state) "enabled" else "disabled").formatted(if (state) Formatting.RED else Formatting.GREEN)) },
             true
         )
         return 1
diff --git a/src/main/kotlin/net/quiltservertools/wires/command/MuteCommands.kt b/src/main/kotlin/net/quiltservertools/wires/command/MuteCommands.kt
index d098789..c706328 100644
--- a/src/main/kotlin/net/quiltservertools/wires/command/MuteCommands.kt
+++ b/src/main/kotlin/net/quiltservertools/wires/command/MuteCommands.kt
@@ -87,13 +87,13 @@ object MuteCommands {
         }
         Config.mute(profile, seconds, reason)
         scs.sendFeedback(
-            Text.literal("Muted ${profile.name} for${
+            { Text.literal("Muted ${profile.name} for${
                 if (seconds < 0) {
                     "ever"
                 } else {
                     " ${seconds - Instant.now().epochSecond} seconds"
                 }
-            }"),
+            }") },
             true
         )
         return 1
@@ -101,7 +101,7 @@ object MuteCommands {
     private fun unmutePlayer(scs: ServerCommandSource, profile: GameProfile): Int {
         Config.unmute(profile)
         scs.sendFeedback(
-            Text.literal("Unmuted ${profile.name}"),
+            { Text.literal("Unmuted ${profile.name}") },
             true
         )
         return 1
@@ -109,7 +109,7 @@ object MuteCommands {
 
     private fun serverMute(scs: ServerCommandSource, time: Long): Int {
         val serverMuteStatus: Boolean = Config.serverMute(time)
-        scs.sendFeedback(Text.literal("Server mute ${if (serverMuteStatus) "enabled" else "disabled"}"), true)
+        scs.sendFeedback({ Text.literal("Server mute ${if (serverMuteStatus) "enabled" else "disabled"}") }, true)
         return 1
     }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/net/quiltservertools/wires/command/StaffchatCommand.kt b/src/main/kotlin/net/quiltservertools/wires/command/StaffchatCommand.kt
index 574e59c..d40f2dd 100644
--- a/src/main/kotlin/net/quiltservertools/wires/command/StaffchatCommand.kt
+++ b/src/main/kotlin/net/quiltservertools/wires/command/StaffchatCommand.kt
@@ -22,10 +22,10 @@ object StaffChatCommand {
             .executes { ctx: CommandContext<ServerCommandSource> ->
                 StaffChat.toggle(ctx.source.player!!.uuid)
                 ctx.source.sendFeedback(
-                    Text.literal(
+                    { Text.literal(
                         if (StaffChat.isInStaffChat(ctx.source.player!!.uuid)
                         ) "Moved to staff chat" else "Moved to game chat"
-                    ), false
+                    ) }, false
                 )
                 1
             }
diff --git a/src/main/kotlin/net/quiltservertools/wires/command/VanishCommand.kt b/src/main/kotlin/net/quiltservertools/wires/command/VanishCommand.kt
index 57aa1a4..41959cd 100644
--- a/src/main/kotlin/net/quiltservertools/wires/command/VanishCommand.kt
+++ b/src/main/kotlin/net/quiltservertools/wires/command/VanishCommand.kt
@@ -33,7 +33,7 @@ object VanishCommand {
             player.addStatusEffect(EFFECT_INSTANCE)
             player.getServer()!!.playerManager.sendToAll(
                 PlayerListS2CPacket(
-                    PlayerListS2CPacket.Action.REMOVE_PLAYER,
+                    PlayerListS2CPacket.Action.UPDATE_LISTED,
                     player
                 )
             )
@@ -68,7 +68,7 @@ object VanishCommand {
         val player = EntityArgumentType.getPlayer(ctx, "player")
         addOrRemove(player)
         ctx.source.sendFeedback(
-            Text.literal("${if (players.contains(player)) "Vanished" else "Unvanished"} ${player.name.string}"),
+            { Text.literal("${if (players.contains(player)) "Vanished" else "Unvanished"} ${player.name.string}") },
             true
         )
         return 1
diff --git a/src/main/resources/fabric.mod.json b/src/main/resources/fabric.mod.json
index bc73411..ca8c849 100644
--- a/src/main/resources/fabric.mod.json
+++ b/src/main/resources/fabric.mod.json
@@ -28,10 +28,10 @@
   ],
 
   "depends": {
-    "fabricloader": ">=0.14.7",
-    "fabric": ">=0.56.0",
-    "minecraft": "1.19.x",
-    "java": ">=17",
+    "fabricloader": ">=0.16.5",
+    "fabric": ">=0.105.0",
+    "minecraft": "1.21.1",
+    "java": ">=21",
     "fabric-language-kotlin": "*"
   }
 }
diff --git a/src/main/resources/wires.mixins.json b/src/main/resources/wires.mixins.json
index f151196..a2a5551 100644
--- a/src/main/resources/wires.mixins.json
+++ b/src/main/resources/wires.mixins.json
@@ -2,7 +2,7 @@
   "required": true,
   "minVersion": "0.8",
   "package": "net.quiltservertools.wires.mixins",
-  "compatibilityLevel": "JAVA_17",
+  "compatibilityLevel": "JAVA_21",
   "server": [
   ],
   "injectors": {