diff --git a/gradle.properties b/gradle.properties
index 090abf2..5810807 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -8,7 +8,7 @@ org.gradle.jvmargs=-Xmx1G
 	loader_version=0.14.9
 
 # Mod Properties
-	mod_version = 0.3
+	mod_version = 0.4
 	maven_group = com.github.zly2006
 	archives_base_name = carpet-sls-addition
 
diff --git a/src/main/java/com/github/zly2006/carpetslsaddition/SLSCarpetSettings.java b/src/main/java/com/github/zly2006/carpetslsaddition/SLSCarpetSettings.java
index 930f6ce..a13fdcb 100644
--- a/src/main/java/com/github/zly2006/carpetslsaddition/SLSCarpetSettings.java
+++ b/src/main/java/com/github/zly2006/carpetslsaddition/SLSCarpetSettings.java
@@ -1,11 +1,9 @@
 package com.github.zly2006.carpetslsaddition;
 
-import carpet.CarpetSettings;
-import carpet.api.settings.CarpetRule;
 import carpet.api.settings.Rule;
 import carpet.api.settings.RuleCategory;
 
-import static com.github.zly2006.carpetslsaddition.ServerMain.*;
+import static com.github.zly2006.carpetslsaddition.ServerMain.CARPET_ID;
 
 public class SLSCarpetSettings {
     @Rule(categories = {CARPET_ID})
@@ -20,4 +18,6 @@ public class SLSCarpetSettings {
     public static boolean autoUrl = false;
     @Rule(categories = {CARPET_ID})
     public static boolean noBatSpawning = false;
+    @Rule(categories = {CARPET_ID})
+    public static boolean offlineFakePlayers = false;
 }
diff --git a/src/main/java/com/github/zly2006/carpetslsaddition/mixin/MixinFakePlayer.java b/src/main/java/com/github/zly2006/carpetslsaddition/mixin/MixinFakePlayer.java
new file mode 100644
index 0000000..d4f98d6
--- /dev/null
+++ b/src/main/java/com/github/zly2006/carpetslsaddition/mixin/MixinFakePlayer.java
@@ -0,0 +1,25 @@
+package com.github.zly2006.carpetslsaddition.mixin;
+
+import carpet.patches.EntityPlayerMPFake;
+import com.github.zly2006.carpetslsaddition.SLSCarpetSettings;
+import com.mojang.authlib.GameProfile;
+import net.minecraft.util.UserCache;
+import net.minecraft.util.dynamic.DynamicSerializableUuid;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+import java.util.Optional;
+import java.util.UUID;
+
+@Mixin(value = EntityPlayerMPFake.class)
+public class MixinFakePlayer {
+    @Redirect(method = "createFake", at = @At(value = "INVOKE", target = "Lnet/minecraft/util/UserCache;findByName(Ljava/lang/String;)Ljava/util/Optional;"))
+    private static Optional<GameProfile> onCreate(UserCache instance, String name) {
+        if (SLSCarpetSettings.offlineFakePlayers) {
+            UUID uuid = DynamicSerializableUuid.getOfflinePlayerUuid(name);
+            return Optional.of(new GameProfile(uuid, name));
+        }
+        return instance.findByName(name);
+    }
+}
diff --git a/src/main/resources/assets/slsaddition/lang/en_us.json b/src/main/resources/assets/slsaddition/lang/en_us.json
index 6ae0a7d..de2977c 100644
--- a/src/main/resources/assets/slsaddition/lang/en_us.json
+++ b/src/main/resources/assets/slsaddition/lang/en_us.json
@@ -4,5 +4,6 @@
   "carpet.rule.maxVillagersInABlock.desc": "The maximum number of villagers that can be in a block, set to -1 to disable.",
   "carpet.rule.creativeNoInfinitePickup.desc": "If my inventory is full, don't pick up items in creative mode.",
   "carpet.rule.autoUrl.desc": "Automatically add click event to URLs in chat.",
-  "carpet.rule.noBatSpawning.desc": "Prevents bats from spawning."
+  "carpet.rule.noBatSpawning.desc": "Prevents bats from spawning.",
+  "carpet.rule.offlineFakePlayers.desc": "Using offline uuid and skin so that fake players wont cause extra network traffic."
 }
diff --git a/src/main/resources/assets/slsaddition/lang/zh_cn.json b/src/main/resources/assets/slsaddition/lang/zh_cn.json
index b499b18..b30e283 100644
--- a/src/main/resources/assets/slsaddition/lang/zh_cn.json
+++ b/src/main/resources/assets/slsaddition/lang/zh_cn.json
@@ -4,5 +4,6 @@
   "carpet.rule.skipTicksForJoblessVillager.desc": "村民没有工作时，跳过村民的tick",
   "carpet.rule.creativeNoInfinitePickup.desc": "创造模式下，玩家不能无限制地拾取物品",
   "carpet.rule.autoUrl.desc": "自动识别URL并添加点击事件",
-  "carpet.rule.noBatSpawning.desc": "禁止蝙蝠生成"
-}
\ No newline at end of file
+  "carpet.rule.noBatSpawning.desc": "禁止蝙蝠生成",
+  "carpet.rule.offlineFakePlayers.desc": "假玩家使用离线皮肤和uuid"
+}
diff --git a/src/main/resources/slsaddition.mixins.json b/src/main/resources/slsaddition.mixins.json
index f11db13..8ab9924 100644
--- a/src/main/resources/slsaddition.mixins.json
+++ b/src/main/resources/slsaddition.mixins.json
@@ -7,6 +7,7 @@
     "AccessorPlayerAbilities",
     "MixinAbstractSignBlock",
     "MixinBlock",
+    "MixinFakePlayer",
     "MixinFallingBlockEntity",
     "MixinItem",
     "MixinItemEntity",