diff --git a/SDK-GMLIB b/SDK-GMLIB
index cda5bfb..37d9220 160000
--- a/SDK-GMLIB
+++ b/SDK-GMLIB
@@ -1 +1 @@
-Subproject commit cda5bfbf85a291a85a78529f760883d1ca7216da
+Subproject commit 37d92200bd9a534ec6f86d8c27abf3a0af0b40f4
diff --git a/src/Entry.cpp b/src/Entry.cpp
index 177563c..8c83e93 100644
--- a/src/Entry.cpp
+++ b/src/Entry.cpp
@@ -24,6 +24,14 @@ auto enable(ll::plugin::NativePlugin& /*self*/) -> bool {
 auto load(ll::plugin::NativePlugin& self) -> bool {
     selfPluginInstance = std::make_unique<std::reference_wrapper<ll::plugin::NativePlugin>>(self);
     initPlugin();
+    if (GMLIB::Version::getProtocolVersion() != TARGET_PROTOCOL) {
+        logger.error(tr("error.protocolMismatch.info"));
+        logger.error(
+            tr("error.protocolMismatch.version",
+               {std::to_string(TARGET_PROTOCOL), std::to_string(GMLIB::Version::getProtocolVersion())})
+        );
+        return false;
+    }
     initPlayerDataCache();
     return true;
 }
diff --git a/src/Global.h b/src/Global.h
index 586fd23..0410006 100644
--- a/src/Global.h
+++ b/src/Global.h
@@ -1,7 +1,8 @@
 #pragma once
 #include <include_all.h>
 
-#define PLUGIN_NAME "InventoryCheck"
+#define PLUGIN_NAME     "InventoryCheck"
+#define TARGET_PROTOCOL 662
 
 extern ll::Logger logger;
 
diff --git a/src/Language.h b/src/Language.h
index a630677..7cd381e 100644
--- a/src/Language.h
+++ b/src/Language.h
@@ -49,6 +49,8 @@ std::string defaultLanguage_en_US = R"(
     checkAll.empty=You've played the entire archive alone, and you're still playing here to check the bag? \nWhy don't you go and recruit people?
     resumeInventory.success=Your backpack has been resumed!
     resumeInventory.failed=Unable to resume your backpack, no data was found on your backpack!
+    error.protocolMismatch.info=You are running on an unsupport protocol version! This may result in crash!
+    error.protocolMismatch.version=Support protocol %1$s, current protocol %2$s.
 )";
 
 std::string defaultLanguage_zh_CN = R"(
@@ -99,4 +101,6 @@ std::string defaultLanguage_zh_CN = R"(
     checkAll.empty=整个存档就你一个人玩过，还在这玩查包呢？\n还不快去招人？
     resumeInventory.success=已成功复原你的背包！
     resumeInventory.failed=无法复原你的背包，没有找到你的背包数据！
+    error.protocolMismatch.info=此插件正在不兼容的版本协议上运行！这可能造成服务器崩溃！
+    error.protocolMismatch.version=此插件支持版本协议 %1$s，服务器版本协议 %2$s。
 )";