diff --git a/UmaUmaChecker/src/Config/Config.cpp b/UmaUmaChecker/src/Config/Config.cpp
index 8d2af46..60d3397 100644
--- a/UmaUmaChecker/src/Config/Config.cpp
+++ b/UmaUmaChecker/src/Config/Config.cpp
@@ -47,6 +47,8 @@ bool Config::Load()
 		Theme = config.value("Theme", 0);
 		CaptureMode = (::CaptureMode)config.value("CaptureMode", 0);
 		Language = utility::from_u8string(config.value("Language", "System"));
+		UpdateUrl = utility::from_u8string(config.value("UpdateUrl", "https://raw.githubusercontent.com/Cilda/UmaUmaChecker/master/UmaUmaChecker/Library/"));
+		if (UpdateUrl.back() != '/') UpdateUrl += L"/";
 	}
 	catch (json::exception& ex) {
 		return false;
@@ -83,6 +85,7 @@ void Config::Save()
 	config["Theme"] = Theme;
 	config["CaptureMode"] = (int)CaptureMode;
 	config["Language"] = std::filesystem::path(Language.begin(), Language.end()).u8string();
+	config["UpdateUrl"] = std::filesystem::path(UpdateUrl.begin(), UpdateUrl.end()).u8string();
 
 	std::ofstream output(utility::GetExeDirectory() + L"\\config.json");
 	output << std::setw(4) << config << std::endl;
diff --git a/UmaUmaChecker/src/Config/Config.h b/UmaUmaChecker/src/Config/Config.h
index ff0f14c..856fa84 100644
--- a/UmaUmaChecker/src/Config/Config.h
+++ b/UmaUmaChecker/src/Config/Config.h
@@ -36,5 +36,6 @@ class Config
 	int OcrPoolSize;
 	int Theme;
 	CaptureMode CaptureMode;
+	std::wstring UpdateUrl;
 };
 
diff --git a/UmaUmaChecker/src/Update/UpdateManager.cpp b/UmaUmaChecker/src/Update/UpdateManager.cpp
index 0327e41..a562c05 100644
--- a/UmaUmaChecker/src/Update/UpdateManager.cpp
+++ b/UmaUmaChecker/src/Update/UpdateManager.cpp
@@ -60,12 +60,13 @@ void UpdateManager::GetUpdates(wxWindow* parent, bool bHideDontShowCheck)
 
 bool UpdateManager::UpdateEvents()
 {
+	auto config = Config::GetInstance();
 	std::vector<wxString> urls{
-		wxT("https://raw.githubusercontent.com/Cilda/UmaUmaChecker/master/UmaUmaChecker/Library/Chara.json"),
-		wxT("https://raw.githubusercontent.com/Cilda/UmaUmaChecker/master/UmaUmaChecker/Library/Events.json"),
-		wxT("https://raw.githubusercontent.com/Cilda/UmaUmaChecker/master/UmaUmaChecker/Library/ReplaceText.json"),
-		wxT("https://raw.githubusercontent.com/Cilda/UmaUmaChecker/master/UmaUmaChecker/Library/ScenarioEvents.json"),
-		wxT("https://raw.githubusercontent.com/Cilda/UmaUmaChecker/master/UmaUmaChecker/Library/Skills.json"),
+		config->UpdateUrl + wxT("Chara.json"),
+		config->UpdateUrl + wxT("Events.json"),
+		config->UpdateUrl + wxT("ReplaceText.json"),
+		config->UpdateUrl + wxT("ScenarioEvents.json"),
+		config->UpdateUrl + wxT("Skills.json"),
 	};
 
 	int UpdatedCount = 0;
@@ -186,6 +187,9 @@ bool UpdateManager::UpdateFile(const wxString& url)
 			case wxWebRequest::State_Active:
 				IsActive = true;
 				break;
+			case wxWebRequest::State_Failed:
+				IsActive = false;
+				break;
 		}
 
 		if (!IsActive) {