diff --git a/common/src/main/kotlin/com/bluedragonmc/server/ModuleHolder.kt b/common/src/main/kotlin/com/bluedragonmc/server/ModuleHolder.kt
index 6fce25d..bd08ecb 100644
--- a/common/src/main/kotlin/com/bluedragonmc/server/ModuleHolder.kt
+++ b/common/src/main/kotlin/com/bluedragonmc/server/ModuleHolder.kt
@@ -3,6 +3,7 @@ package com.bluedragonmc.server
 import com.bluedragonmc.server.module.GameModule
 import net.minestom.server.event.Event
 import org.slf4j.LoggerFactory
+import java.util.concurrent.CopyOnWriteArrayList
 import java.util.function.Consumer
 import java.util.function.Predicate
 import kotlin.reflect.KClass
@@ -21,7 +22,7 @@ abstract class ModuleHolder {
     /**
      * A list of modules that have been loaded and subscribed to an event node.
      */
-    val modules = mutableListOf<GameModule>()
+    val modules: MutableList<GameModule> = CopyOnWriteArrayList()
 
     private fun <T : GameModule> hasModule(type: KClass<T>): Boolean = modules.any { type.isInstance(it) }
     inline fun <reified T : GameModule> hasModule(): Boolean = modules.any { it is T }
diff --git a/common/src/main/kotlin/com/bluedragonmc/server/module/combat/ProjectileModule.kt b/common/src/main/kotlin/com/bluedragonmc/server/module/combat/ProjectileModule.kt
index 9a9adbe..971a149 100644
--- a/common/src/main/kotlin/com/bluedragonmc/server/module/combat/ProjectileModule.kt
+++ b/common/src/main/kotlin/com/bluedragonmc/server/module/combat/ProjectileModule.kt
@@ -248,15 +248,15 @@ class ProjectileModule : GameModule() {
                 player.inventory.setItemInHand(hand, itemStack.withAmount(itemStack.amount() - 1))
             }
 
-            // Shoot a snowball from the player's position
-            val snowball = Projectile(player, EntityType.FIREBALL)
-            snowball.setInstance(instance, getEyePos(player))
-            snowball.shoot(getLaunchPos(player), 3.0, 1.0)
+            // Shoot a fireball from the player's position
+            val fireball = Projectile(player, EntityType.FIREBALL)
+            fireball.setInstance(instance, getEyePos(player))
+            fireball.shoot(getLaunchPos(player), 3.0, 1.0)
             player.instance?.playSound(
                 Sound.sound(SoundEvent.ITEM_FIRECHARGE_USE, Sound.Source.MASTER, 1.0f, 1.0f),
                 player.position
             )
-            snowball.scheduleRemove(Duration.ofSeconds(30))
+            fireball.scheduleRemove(Duration.ofSeconds(30))
         }
     }
 
@@ -365,7 +365,7 @@ class ProjectileModule : GameModule() {
                 player.inventory.setItemInHand(hand, itemStack.withAmount(itemStack.amount() - 1))
             }
 
-            // Shoot a snowball from the player's position
+            // Shoot an egg from the player's position
             val egg = Projectile(player, EntityType.EGG)
             egg.setInstance(instance, getEyePos(player))
             egg.shoot(getLaunchPos(player), 3.0, 1.0)
diff --git a/common/src/main/kotlin/com/bluedragonmc/server/module/minigame/TeamModule.kt b/common/src/main/kotlin/com/bluedragonmc/server/module/minigame/TeamModule.kt
index 66d4a62..4d173e2 100644
--- a/common/src/main/kotlin/com/bluedragonmc/server/module/minigame/TeamModule.kt
+++ b/common/src/main/kotlin/com/bluedragonmc/server/module/minigame/TeamModule.kt
@@ -18,6 +18,7 @@ import net.minestom.server.entity.Player
 import net.minestom.server.event.Event
 import net.minestom.server.event.EventNode
 import java.util.*
+import java.util.concurrent.CopyOnWriteArrayList
 
 /**
  * A module that provides team support.
@@ -160,7 +161,7 @@ class TeamModule(
 
     data class Team(
         val name: Component = Component.empty(),
-        val players: MutableList<Player> = mutableListOf(),
+        val players: MutableList<Player> = CopyOnWriteArrayList(),
         val allowFriendlyFire: Boolean = false,
         val nameTagVisible: Boolean = true,
     ) : PacketGroupingAudience {
diff --git a/src/main/kotlin/com/bluedragonmc/server/impl/OutgoingRPCHandlerImpl.kt b/src/main/kotlin/com/bluedragonmc/server/impl/OutgoingRPCHandlerImpl.kt
index 6ed9293..cc70deb 100644
--- a/src/main/kotlin/com/bluedragonmc/server/impl/OutgoingRPCHandlerImpl.kt
+++ b/src/main/kotlin/com/bluedragonmc/server/impl/OutgoingRPCHandlerImpl.kt
@@ -83,8 +83,10 @@ class OutgoingRPCHandlerImpl(serverAddress: String, serverPort: Int) : OutgoingR
             }
         }
 
-        override fun deinitialize(): Unit = runBlocking {
-            Messaging.outgoing.notifyInstanceRemoved(parent.id)
+        override fun deinitialize() {
+            Messaging.IO.launch {
+                Messaging.outgoing.notifyInstanceRemoved(parent.id)
+            }
         }
     }