diff --git a/common/build.gradle.kts b/common/build.gradle.kts
index 90a0e494..a936d727 100644
--- a/common/build.gradle.kts
+++ b/common/build.gradle.kts
@@ -7,7 +7,7 @@ plugins {
 }
 
 group = "io.github.fisher2911"
-version = "1.9.1"
+version = "1.9.2"
 description = "Intuitive, easy-to-use cosmetics plugin, designed for servers using resource packs.\n"
 
 repositories {
diff --git a/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/command/CosmeticsCommand.class b/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/command/CosmeticsCommand.class
index 16f6389d..0a36d689 100644
Binary files a/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/command/CosmeticsCommand.class and b/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/command/CosmeticsCommand.class differ
diff --git a/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/listener/PlayerShiftListener.class b/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/listener/PlayerShiftListener.class
index e805242a..edd5385e 100644
Binary files a/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/listener/PlayerShiftListener.class and b/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/listener/PlayerShiftListener.class differ
diff --git a/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/task/TaskManager.class b/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/task/TaskManager.class
index f357f524..e77fdb73 100644
Binary files a/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/task/TaskManager.class and b/common/build/classes/java/main/io/github/fisher2911/hmccosmetics/task/TaskManager.class differ
diff --git a/common/build/libs/HMCCosmetics.jar b/common/build/libs/HMCCosmetics.jar
index c002f028..410167c0 100644
Binary files a/common/build/libs/HMCCosmetics.jar and b/common/build/libs/HMCCosmetics.jar differ
diff --git a/common/build/resources/main/plugin.yml b/common/build/resources/main/plugin.yml
index 8dbf05d4..6cd0d942 100644
--- a/common/build/resources/main/plugin.yml
+++ b/common/build/resources/main/plugin.yml
@@ -1,5 +1,5 @@
 name: HMCCosmetics
-version: 1.8.2
+version: 1.9.1
 main: io.github.fisher2911.hmccosmetics.HMCCosmetics
 description: |
   Intuitive, easy-to-use cosmetics plugin, designed for servers using resource packs.
diff --git a/common/build/tmp/compileJava/previous-compilation-data.bin b/common/build/tmp/compileJava/previous-compilation-data.bin
index 08646bad..a6a05aea 100644
Binary files a/common/build/tmp/compileJava/previous-compilation-data.bin and b/common/build/tmp/compileJava/previous-compilation-data.bin differ
diff --git a/common/src/main/java/io/github/fisher2911/hmccosmetics/hook/item/CitizensHook.java b/common/src/main/java/io/github/fisher2911/hmccosmetics/hook/item/CitizensHook.java
index a01b6df0..62ae7d29 100644
--- a/common/src/main/java/io/github/fisher2911/hmccosmetics/hook/item/CitizensHook.java
+++ b/common/src/main/java/io/github/fisher2911/hmccosmetics/hook/item/CitizensHook.java
@@ -24,11 +24,11 @@ import org.bukkit.event.Listener;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
 
 public class CitizensHook implements Hook, Listener {
 
@@ -37,7 +37,7 @@ public class CitizensHook implements Hook, Listener {
     private final HMCCosmetics plugin;
     private final Database database;
 
-    private final Map<Integer, NPCUser> npcs = new HashMap<>();
+    private final Map<Integer, NPCUser> npcs = new ConcurrentHashMap<>();
 
     public CitizensHook(final HMCCosmetics plugin) {
         this.plugin = plugin;